Bertrandiella griseldae, new species is described based on specimens found on the gecko Tarentola americana. Additionally, the female of Geckobiella javieri is described for the first time, new data for larvae and deutonymphs are presented, and a summary of the leg chaetotaxy for Geckobia tarentolae is reported. A taxonomic identification key for the mite species of Pterygosomatidae ectoparasitic on lizards from Cuba is also provided.
Se describe a Bertrandiella griseldae, especie nueva con base en ejemplares recolectados sobre el gecko Tarentola americana. Adicionalmente, se describe por primera vez la hembra de Geckobiella javieri, se presentan nuevos datos para las larvas y deutoninfas, y se completan los datos de la quetotaxia de las patas para Geckobia tarentolae. Se presenta una clave de identificación taxonómica para las especies de ácaros de la familia Pterygosomatidae, ectoparásitos de lagartijas en Cuba.
The family Pterygosomatidae Oudemans 1910 (Acari: Prostigmata) includes 162 species of mainly obligate ectoparasitic mites of lizards, although some species can be found on arthropods, and 2 species have been recorded occasionally on turtles and doves. The family has a worldwide distribution (Bochkov and OConnor, 2006). These mites feed on body fluids apparently without harming their host, but in some cases they can inflict some pathological disorders, including anemia and an intense skin itch (Baker, 1998; Walter and Proctor, 1999). Besides these, apparently, some species are vectors of protozoan that cause diseases in lizards (Goodwing, 1954; Newell and Ryckman, 1964; Walter and Shaw, 2002).
There are 4 species of pterygosomatid mites reported for Cuba. Geckobia tarentolaede la Cruz, 1973 was described based on females, males and nymphs (probably deutonymphs) that were collected parasitizing the geckonid lizard Tarentola americana (Gray, 1831) (Phyllodactylidae) from Villa Clara. Another species was collected on the same host, but from a different locality (La Habana), and it was erroneously determined as Hirstiella otophilaHunter and Loomis 1966 (now Bertrandiella otophila) by de la Cruz (1973). The third species was collected on the endemic iguana Cyclura nubila nubila (Gray, 1831) (Iguanidae) from Granma, and it was described as the type species of a new genus named Cyclurobia javieride la Cruz, 1984 (now Geckobiella javieri). The taxonomic validity of the monotypic genus Cyclurobia was uncertain because the description of the type species was based only on males and immatures (deutonymphs and larvae), instead of females, as in the other genera of Pterygosomatidae. Currently, Cyclurobia is a junior synonym of Geckobiella (Paredes-León et al., 2012). The fourth species, Geckobia hemidactyliLawrence 1936, was recorded at Bahía de Guantánamo on the introduced geckonid lizard Hemidactylus mabouia (Moreau de Jonnes, 1818); seemingly, G. hemidactyli arrived together with H. mabouia in Transatlantic dispersal events (Martínez-Rivera et al., 2003).
Based on the analysis of type material of the above mentioned species, and specimens subsequently collected in Cuba, we describe a new species of Bertrandiella, from the specimens previously determined by de la Cruz (1973) as Hirstiella otophila. We also describe, for the first time, the female of Geckobiella javieri, and present new data of setation (idiosomal and leg) for immature stages, and describe the leg setation formula for Geckobia tarentolae.
Materials and methodsType material and voucher specimens of Cuban pterygosomatid mites from 2 acarological collections were examined: Colección Acarológica, Instituto de Ecología y Sistemática (IESCA), La Habana, Cuba; and Acarology Laboratory, Ohio State University (OSAL), Columbus, Ohio, USA. Specimens of closely related species deposited at The Natural History Museum (BM(NH)), London, UK and Colección Nacional de Ácaros (CNAC), Instituto de Biología, Universidad Nacional Autónoma de México were also analyzed for comparative purposes. Specimens of Geckobia hemidactyli from Cuba were not available but we carried out a diagnosis based on specimens from Brazil. Additional specimens of pterygosomatid mites were collected from 2 wild iguanas Cyclura n. nubila in Cuba, and from alcohol preserved iguanas deposited at herpetological collection of the Instituto de Ecología y Sistemática (IES). These latter mite specimens were deposited at CNAC and IESCA.
Fresh mites were cleared and mounted in microscope slides using Hoyer as preservation medium. All mites were observed under a Nikon Optiphot compound optical microscope (with phase contrast and differential interference contrast illumination). Figures were made with the aid of a camera lucida tube adapted to a microscope, and measurements were taken with an objective with a graduated rule. One specimen of Geckobiella javieri was prepared for scanning electron microscopy (SEM) following the protocol given by Alberti and Nuzzaci (1996), and micrographs were obtained using a Hitachi S-2460N SEM microscope. All measurements are given in micrometers.
Palpal, idiosomal and leg setation follows Granjeans's nomenclature (Grandjean, 1939, 1944, 1946) as implemented for Pterygosomatidae by Bochkov and OConnor (2006), Bochkov et al. (2008) and Paredes-León et al. (2012). Abbreviations used in descriptions and figures are for gnathosoma: n: subcapitular ventral setae, d: dorsal setae on palps, l: anterolateral setae on palps, v: ventral setae on palps, lT: lateral setae on palpal tibia, ω: basal solenidion on palpal tarsus; idiosoma: 1a: innermost (first) pair of coxal-sternal setae associated with coxae of legs I, 1b: second pair of coxal-sternal setae associated with coxae of legs I, 2a: innermost (first) pair of coxal- sternal setae associated with coxae of legs II, 2b: second pair of coxal-sternal setae associated with coxae of legs II, 3a: innermost (first) pair of coxal-sternal setae located between coxae of legs III, 3b: second pair of coxal-sternal setae associated with coxae of legs III, 3c: third pair of coxal-sternal setae associated with coxae of legs III, 3d: fourth pair of coxal-sternal setae associated with coxae of legs III, 4a: innermost (first) pair of coxal-sternal setae located between coxae of legs IV, 4c: third pair of coxal-sternal setae associated with coxae of legs IV, vi: internal pair of vertical setae on prodorsum, ve: external pair of vertical setae on prodorsum, sci: internal pair of scapular setae on prodorsum, sce: external pair of scapular setae on prodorsum, c1: innermost (first) pair of setae in first series or row (segment C) on hysterosoma, c2: second pair of setae in segment C on hysterosoma, c3: third pair of setae in segment C on hysterosoma, d1: innermost (first) pair of setae in second series or row (segment D) on hysterosoma, d2: second pair of setae in segment D on hysterosoma, e1: innermost (first) pair of setae in third series or row (segment E) on hysterosoma, e2: second pair of setae in segment E on hysterosoma, f1: innermost (first) pair of setae in fourth series or row (segment F) on hysterosoma, f2: second pair of setae in segment F on hysterosoma, h1: innermost (first) pair of setae in fifth series or row (segment H) on hysterosoma, h2: second pair of setae in segment H on hysterosoma,ps1: first pair of pseudanal setae, ps2: second pair of pseudanal setae, ps3: third pair of pseudanal setae, g1: genital seta, ag1: first pair of aggenital (pregenital) setae, ag2: second pair of aggenital (pregenital) setae, ag3: third pair of aggenital (pregenital) setae; legs: ω1: distal or medium solenidion on tarsus I, ω2: proximal solenidion on tarsus I, ω: solenidia on tarsi II-III, ft: fastigial seta on tarsus I, p: proral setae on tarsi I-IV, u: unguinal setae on tarsi I-IV, tc: tectal setae on tarsi I-IV, a: antilateral setae on tarsi I-IV, pl: primilateral setae on tarsus I, it: iteral setae on tarsus I, vs: ventral subunguinal setae on tarsi I-IV, K: minute specialized seta found distodorsally on genu I, d: dorsal seta on podomeres (trochanters to tibiae), v: ventral setae on podomeres (trochanters to tibiae), l: lateral setae on podomeres (trochanters to tibiae), the prime (') indicate the anterior seta of a pair, the second (”) indicate the posterior seta of a pair, setae in brackets indicate both of a pair present. WVI: width between setal pair vi on prodorsal shield, WVE: width between setal pair ve on prodorsal shield, WSCI: width between setal pair sci on prodorsal shield, WC1: width between setal pair c1 on prodorsal shield. For the numeration of tarsal solenidia we give the number 1 (i.e., ω1) to the first appearing during ontogeny and the second the number 2 (ω2) following Evans (1992).
DescriptionsBertrandiella griseldae Paredes-León, Cuervo-Pineda et Pérez, sp. nov. (Figs. 1, 2)
Diagnosis. Adult female with 2 solenidia on tarsi I (ω1 and ω2); seta ft subequal in length to solenidion ω1; prodorsal shield shaped as an inverted equilateral triangle with posterior end acute.
Description. Based on holotype female. Gnathosoma (Figs. 1A, B): dorsal subcapitulum with broad anterolateral flange, and ventrally with pair of strongly barbed infracapitular setae (n); palps slightly longer than subcapitulum; hypostome tubular and short, as long as palps. Palpal femur and genu wider than long, with 1 seta d each, femoral seta longer, wider and pectinate, while genual seta sparsely barbed; palpal tibia slightly longer than wide and with 3 setae (l', IT and v) shorter than those of femur and genu; lT short and simple, l' longest, broad and sparsely barbed and v with broad and nude stalk ending in thick brush-like structure; tibial claw simple, curved and long, as long as tibial length; tarsus very reduced and round with ω and 5 long thin setae, 2 of them sparsely barbed, and 3 simple. Chelicerae longer than palps, with basal part globose, and fivefold wider than distal part; fixed digit membranous and spiniform, movable digit robust and outward curved. Emergent peritreme short, never reaching femoral seta d. Idiosoma: oligotrichous and ovoid, longer than wide, maximal wide between setae c2 and d2; cuticle striate except in prodorsal shield, setal platelets and part of anogenital area. Dorsum: prodorsal shield shaped as an inverted equilateral triangle with 3 pairs of long and peripectinate setae (vi, ve and sci); 1 pair of eyes located anteriorly, each eye associated with seta sce in a platelet; dorsal setae peripectinate and long, each transversal row of setae reaching next row; setae c3 absent. Anal area located forward of posterior tip with setae ps arboriform (extensively peripectinate), subequal in length and shorter than rest of dorsal setae, particularly (ps2-3) (Fig. 1D). Venter: setae: coxal formula 2-2-4-2 (1a, 1b - 2a, 2b - 3a, 3b, 3c, 3d - 4a, 4c) on coxae I-IV respectively except for 3a on intercoxal area and 4a between coxae IV; 1a, 2a and 3b simple, 3a and 4a sparsely barbed, 1b, 2b, 3c, 3d and 4c thick and peripectinate. Setae ag1-3 thick and peripectinate, slightly longer than coxal setae, (ag3) longest, g1 peripectinate and subequal in length to (ag1- 2) (Fig. 1E). Legs: longer than idiosoma, leg I longest. All setae on trochanter-tibia I-IV pectinate and long, some of them as long as each podomere. Seta d on tibiae I, III and IV with deep goblet-shaped base. Tarsi I-IV getting thinner from proximal to distal end, and with (p) bipectinate; tarsus I with (tc) smooth (eupathidia) subequal in length and short (not reaching tip of claw); tarsi II-IV with (tc) peripectinate and subequal in length, and longer than (tc) on tarsi I. Tarsi I with another pair of eupathidia (it) at base of pretarsus; (vs) on tarsi I-IV always present, peripectinate, long and subequal in length; (a) sparsely barbed, and (u) branched; ω1 long and subequal in length with peripectinate ft, ω2 on tarsi I present and very reduced (Fig. 1C); tarsi II-III with 1 ω shorter than ω1 of tarsus I; pretarsi with paired claws bearing tenent hairs. Setal formula summary (legs I-IV, additional microseta κ and solenidia ω in brackets): trochanters 1-1-1-1, femora 5-4-3-3, genua 5(κ)-5-3-3, tibiae 5-5-5-5 and tarsi 14(ω1, ω2)-10(ω)-10(m)-10.
Measurements. Holotype female (followed in parentheses by range of holotype and 2 paratype females). Gnathosoma length 170 (170–180), base of gnathosoma (subcapitulum) width 150 (130–190), seta n length 39 (35–39), chelicerae 150 (150–165) long and 29 (29–37) width at base, palp 145 (145–180) long and 40 (40–65) wide, palp-claw length 27 (27–43), peritreme length (complete) 165 (165–200); idiosoma 365 (365–910) long (gnathosoma excluded) and 265 (265–830) maximal width (at level of setae sce), prodorsal shield 115 (115–135) long and 180 (180–215) width (at anterior margin), WVI 46 (46–56), WVE 145 (145–175), WSCI 50 (50–59); setal lengths: vi 120 (120–130),ve 135 (135–140), sci 120 (115–120), sce 125 (125–135), g1 46 (46–52); legs length (excluding ambulacrum): leg I 500 (500–620), leg II 440 (440–555), leg III 405 (405–605), leg IV 425 (425–655); ω1 on tarsus I length 72 (69–80), ft length 71 (68–77), ω2 on tarsus I length 7 (5–7), ω on tarsus II length 21 (19–22), – on tarsus III length 11 (8–11).
Male. Gnathosoma: with seta d short on palpal femur (as long as palpal femur length or shorter). Palpal setation same as in female. Idiosoma (Fig. 2): more tapered posteriorly; differing from female in shape of prodorsal shield being rectangular, wider than long, and with 4 setae (vi, ve, sci and c1) instead of 3 (Fig. 2A). Dorsal setae shorter, never reaching next transversal row of setae; dorsal setae c3 absent; each e1 and e2 very close and grouped in single platelet; all setae peripectinate except for (h1), (h2), (f2) and (ps1-3) simple. Ventral setation same as female except for absence of (4c), (ag2), (ag3) and (g1); coxal setae thinner, and (1a), (2a) and (3b) sparsely barbed instead simple. Internal aedeagus directed backward, ending at genital-anal slit (Fig. 2A). Legs: ω2 on tarsi I present and distinctly developed (longer than in female). Setal formula summary (legs I-IV, additional microseta (κ) and solenidia ω in brackets): trochanters 1-1-1-0, femora 5-4-3-2, genua 5(κ)-5-3-3, tibiae 5-5-5-5 and tarsi 14(ω1, ω2)-10(ω)-10(ω)-10.
Measurements. Range of 5 paratype males. Gnathosoma length 77–91, base of gnathosoma (subcapitulum) width 64–88, seta n 28–34 long, chelicerae 74–88 long and 16–20 wide at base, palp 74–85 long and 21–32 wide, palp-claw length 12–17, peritreme length (complete) 74–84; idiosoma 288–366 long (gnathosoma excluded) and 174–279 maximal width (at level of setae sce), prodorsal shield 62–69 long and 104–110 wide, WVI 28–37, WVE 62–71, WSCI 36–40, WC1 82–88; setae length: vi 60–64, ve 67–73, sci 74–83, c1 66–85, sce 64–75; aedeagus length 152–175; legs length (excluding ambulacrum): leg I 422–474, leg II 352–418, leg III 372–415, leg IV 434–465; ω1 on tarsus I length 66–73, ft length 64–69, ω2 on tarsus I length 30–33, ω on tarsus II length 34–39, ω on tarsus III length 15–16. Deutonymph. Gnathosoma: palps, chelicerae and palpal setation as in female; deutonymph with (n) sparsely barbed, which strongly barbed in females. Idiosoma: prodorsal shield, shape and length of dorsal and ventral setae same as in female; deutonymph differing from female in absence of dorsal (f2) and absence of ventral (4c), (ag3) and (g1). Legs: setal formula summary (legs I-IV, additional microseta κ and solenidia ω in brackets): trochanters 1-1-1-0, femora 5-4-3-2, genua 5(κ)-5-3-3, tibiae 5-5-5-5, tarsi 14 (ω1)-10(ω)-10(ω)-10. Tarsi I with 1 solenidion (ω1) instead of 2 as in adults.
Measurements. Paratype deutonymph (1 specimen). Gnathosoma length 99, base of gnathosoma (subcapitulum) width 79, seta n length 26, chelicerae 82 long and 13 wide at base, palp 56 long and 23 wide, palp-claw length 25; idiosoma 279 long (gnathosoma excluded) and 245 maximal width (at level of setal pair sce), prodorsal shield 80 long and 101 wide (at anterior margin), WVI 35, WVE 80, WSCI 39; setal lengths: vi 98, ve 109, sci 104, sce 98; legs length (excluding ambulacrum): leg I 356, leg II 329, leg III 274, leg IV 336; ω1 on tarsus I length 61, ft length 63, ω on tarsus II length 11, ω on tarsus III length 9. Larva, protonymph and tritonymph: unknown.
Taxonomic summaryType locality: Boca de Jaruco, Habana, Cuba.
Type specimens: female holotype IESCA10874; female paratype IESCA10877; male paratypes IESCA10873;75;79-81; deutonymph paratype IESCA10882. The type series corresponds to specimens recorded by de la Cruz (1973), and misidentified as Hirstiella otophila (now Bertrandiella otophila).
Additional material examined: female paratype 0SAL0067359, ex Tartola cubana (sic), “gecko (lizard)” (should be Tarentola americana), Trinidad, Cuba, coll. J. D. Hardy Jr.
Type host: Tarentola americana, American wall gecko (Reptilia: Squamata: Phyllodactylidae).
Site of infestation: armpit and around ear (de la Cruz, 1973).
Etymology: this species is named in honor to Griselda Montiel-Parra, assistant curator of the Colección Nacional de Ácaros, Instituto de Biología, UNAM, for her support during the study of pterygosomatid mites.
Geographic range: known only from Cuba; Bertrandiella griseldae n. sp. is a monoxenous parasite of Tarentola americana from Cuba.
Remarks. Bertrandiella griseldae n. sp. is close to B. jimenezi and B. chamelaensis. In the females of these 3 species the prodorsal shield have the posterior end very acute. The female of Bertrandiella griseldae n. sp. differs from the other 3 females known in the genus (B. otophila, B. jimenezi and B. chamelaensis) as follows: ω2 on tarsus I is present in B. griseldae n. sp., and it is absent in the other 3 species. Seta ft is subequal in length to ω1 in B. griseldae n. sp., and it is clearly shorter than ml in B. jimenezi and B. chamelaensis. Femur IV is complete in B. griseldae n. sp., and it is divided in 2 non-articulating podomeres in B. chamelaensis. The posterior margin of prodorsal shield in B. griseldae n. sp. is acuter than in B. otophila.
A small plate grouping each e1 and e2 is shared by the males of B. griseldae n. sp. and B. otophila. Males of B. griseldae n. sp. differs from males of B. otophila and B. jimenezi as follows: setae ps1 are thin and simple in B. griseldae n. sp., while they are slightly thickened and blunt in B. jimenezi, or thicker as in B. otophila (the “anal spurs” sensu Hunter and Loomis, 1966). The prodorsal shield in males is longer in B. otophila (79) than in B. griseldae n. sp. (66). Setae vi and ve are longer in B. otophila (76) than in B. griseldae n. sp. (63 and 71). The setal pairs sci and c1 are longer in B. otophila (85) than in B. griseldae n. sp. (71 and 75). The width between setal pair sci on prodorsal shield is greater in B. otophila (50) than in B. griseldae n. sp. (39).
Only the deutonymphs for Bertrandiella tenuipes (Hirst) and B. jimenezi are known. The deutonymph of B. griseldae n. sp. differs from that of B. tenuipes (based on holotype BM(NH)) in the width of prodorsal shield (101 versus 113), the width between setal pair ve on prodorsal shield is also different (80 versus 96) and the width between setal pair sci on prodorsal shield (39 versus 54). The setae sce are short in the deutonymph of B. griseldae n. sp. (98), while it is longer in deutonymph of B. jimenezi (122), ω1 of tarsus I is longer in B. griseldae (63) than in B. jimenezi (42), and it is subequal in length with ft, while it is shorter in B. jimenezi, and ω on tarsus III is long in B. griseldae n. sp. (9), whereas it is short in B. jimenezi (5).
Geckobiella javieri (de la Cruz) (Figs. 3, 4)
Cyclurobia javieride la Cruz, 1984: 5; Figs. 1-3.
Hirstiella javieriBochkov, 2008: 338
Geckobiella javieriParedes-León, Klompen and Pérez, 2012: 11; Fig. 2F.
Diagnosis. Adult female with oligotrichous idiosoma; prodorsal shield shaped as inverted pear, length equals width, and with 2 pairs of setae (vi and sci); dorsal setae h1 peripectinate and clavate (club-like); solenidion ω2 on tarsus I short (26-27).
Description. Female. Gnathosoma (Figs. 3A, B, 4A): subcapitulum simple with (n) simple and short (not reaching palpal genu), inserted behind palps. Palpal segments (femur to tarsus) longer than wide; femur and genu with 1 seta d, subequal in length (shorter than their respective podomere), subclavate and peripectinate; palpal tibia with 3 simple setae (l', lT and v), slender than genual and femoral palpal setae; tibial claw simple, curved and short; palpal tarsi basally with longitudinal row of 1 proximal setae, ω and 2 short and simple setae; apically with 1 eupathid (ζ) and 2 subterminal simple setae. Chelicerae elongate, subequal in length to palps, and thin but with basal part globose; fixed digit membranous and spiniform, movable digit robust and outward curved. Emergent peritreme long, reaching palpal genua. Idiosoma (Figs. 3D-E, 4B): oligotrichous and ovoid, longer than wide, narrow part directed posteriorly and maximal width at the level of c2; cuticle striate except in prodorsal shield, setal platelets, anogenital area and space between (c1) and (d1). Dorsum: prodorsal shield oval in shape and slightly wider than long, widest part at level of setal pair sci, with 2 pairs of short, peripectinate and subclavate setae (vi and sci) (Fig. 4C). Dorsal setae short, peripectinate and clavate; (c3) present; 1 pair of eyes located anteriorly, each eye associated with sce in a platelet. Anal area located at the tip of posterior margin with (ps1-3) short, thin and sparsely barbed, increasing in length, ps3 longest (length equals dorsal setae length). Venter: setae: coxal formula 2-2-4-1 (1a, 1b – 2a, 2b – 3a, 3b, 3c, 3d – 4a) on coxae I-IV respectively except for 3a which is on intercoxal area, and for 4a which is behind coxae IV; all these coxal setae short, thin and simple, except for 2b which sparsely barbed, and 3d which pectinate; (4c) absent. Setae (ag1-3) thin and simple; (g1) short, thin and simple, and on lobes. Legs: relatively short, shorter than idiosoma length. Detailed leg chaetotaxy as follows, leg I: trochanter with v pectinate; femur with d club-like, (l) subclavate, (v) slightly pectinate; genu with d and (l) club-like, (v) slightly pectinate, with microseta K; tibia with d thin and finely branched in its distal half, with deep goblet-shaped base, (l) subclavate, (v) slightly pectinate; tarsus with 1 short basal ω2, distal ω1 longer than ω2 and on bulge in close association with ft which sparsely barbed and slightly longer than ω1, pl' slightly pectinate, dorsal (tc) smooth (eupathidia) on bulge at point where tarsus blunt, (p) feather-like, (it) eupathidia, (a) simple, (u) branched, (vs) slightly pectinate (Figs. 3C, 4D). Leg II: trochanter with v slightly pectinate; femur same as in femur I but v' absent; genu with d club-like, (l) subclavate and 1 seta v (difficult to define if it is v' or v” because it is located at the middle of the podomere) slightly pectinate; tibia same as in tibia I but d with simple base; tarsus with short ω, tc' longer than tc”, both barbed, (a) barbed, (u), (p) and vs' same as in tarsus I. Leg III: trochanter same as in trochanter II; femur same as in femur I but l” absent; genu same as in genu II but l” absent and v' present; tibia same as in tibia I; tarsus same as in tarsus II but with ω shorter than those found on tarsi I-II. Leg IV: trochanter same as in trochanter I; femur same as in femur I but l” and (v) absent; genu same as in genu III; tibia as in tibia I; tarsus same as in tarsus I but ω absent. Setal formula summary (legs I-IV, additional microseta κ and solenidia ω in brackets): trochanters 1-1-1-1, femora 5-4-3-2, genua 5(κ)-4-3-3, tibiae 5-5-5-5 and tarsi 14(ω1, ω2)-9(ω)-9(ω)-9.
Measurements. Range of 4 females. Gnathosoma length 170–217, base of gnathosoma (subcapitulum) width 84–91, seta n length 42–45, chelicerae 177–197 long and 28–29 wide at base, palp 170–198 long and 22–26 wide, palp-claw length 12–15, peritreme length (complete) 233–273; idiosoma 544–659 long (gnathosoma excluded) and 333–416 maximal width (at level of setae sce), prodorsal shield 164–189 long and 183–195 wide (at level of setal pair sci), WVI 85–93, WVE 183–205, WSCI 105–118; setal length: vi 39–43, ve 40–45, sci 48, sce 60–65, g1 length 38–42; legs length (excluding ambulacrum): leg I 334–429, leg II 279–317, leg III 294–326, leg IV 344–381; ω1 on tarsus I length 45, ft length 50–55, ω2 on tarsus I length 26–27, ω on tarsus II length 13–15, ω on tarsus III length 4–6.
Deutonymph. Gnathosoma: setation on palps and subcapitulum same as in female; chelicerae and palps slightly shorter than those from the female. Idiosoma: prodorsal shield and setation as in female, except for the dorsal club-like setae which are more expanded; (f2), (ag3), (g1) and (4c) are absent. Legs: setal forms as in female; chaetotaxy as in female, except for v that is absent on trochanter IV, ω on tarsi III very reduced (vestigial). Setal formula summary (legs I-IV, additional microseta κ and solenidia ω in brackets): trochanters 1-1-1-0, femora 5-4-3-2, genua 5(κ)-4-3-3, tibiae 5-5-5-5 and tarsi 14(ω1, ω2)-9(ω)-9(ω)-9.
Measurements. Deutonymph (1 specimen available). Gnathosoma length 153, base of gnathosoma (subcapitulum) width 68, seta n length 31, chelicerae 144 long and 22 wide at base, palp 127 long and 23 wide, palp-claw length 9, peritreme length (complete) 217; idiosoma 373 long (gnathosoma excluded) and 260 maximal width (at level of setae sce), prodorsal shield 133 long and 127 wide (at anterior margin), WVI 54, WVE 134, WSCI 74; setal length: vi 26, ve 30, sce 40; legs length (excluding ambulacrum): leg I 250, leg II 186, leg III 192, leg IV 243; ω1 on tarsus I length 31, ft length 45, ω2 on tarsus I length 10, ω on tarsus II length 9, ω on tarsus III length 1.
Larva. Gnathosoma: relatively long, slightly shorter than idiosoma length; setae n absent; chelicerae and palps slightly shorter than those from female; setation on palps and subcapitulum same as those found on female. Idiosoma: prodorsal shield with pointed anterior margin and without setae. All dorsal setae club-like; (c3), (f2), (ps1-3) absent. Ventral setae on coxa I (1a, 1b) and on coxa III (3b) simple, the rest of ventral setae (2a, 2b, 3a, 3c, 3d, 4a, 4c, ag1-3, g1) are absent. Legs: seta v' on femur I, (v) on genu I, d and v” on genu II, d and v' on genu III, (tc) and ω2 on tarsus I, and ω on tarsus III absent; seta p' barbed and p” feather-like on tarsus I; (it) on tarsus I not aligned horizontally; seta vs on tarsus II and III in middle of podomere making difficult to determine if it is vs' or vs”; setal formula summary (legs I-III, additional microseta κ and solenidia ω in brackets): trochanters 0-0-0, femora 4-4-3, genua 2(κ)-2-1, tibiae 5-5-5 and tarsi 12(ω1)-9(ω)-9.
Measurements. Range of 2 larvae. Gnathosoma length 145–150, base of gnathosoma (subcapitulum) width 48–50, chelicerae 125–140 long and 16–19 wide at base, palp 125–130 long and 12 wide, palp-claw length 7–8, peritreme length (complete) 135–140; idiosoma 170 long (gnathosoma excluded) and 115–135 maximal width (at level of setal pair sce), prodorsal shield 80-86 long and 23-28 wide (at level of setae sci), WVI 8–11, WVE 30–32, WSCI 34–38; setal length: vi 14–16, ve 14–15, sci 14, sce 14–18; legs length (excluding ambulacrum): leg I 175, leg II 135–140, leg III 150; ω1 on tarsus I length 24, ft length 59–60, ω on tarsus II length 6–7.
Taxonomic summaryType locality: Cabo Cruz, Niquero, Granma, Cuba (de la Cruz, 1984).
Type specimens: male holotype, deutonymphs and larvae paratype IESCA, probably lost.
Material examined: 3 females CNAC007043-45, ex Cyclura n. nubila (IES12729), Guanahacabibes, Pinar del Río, Cuba, 21 February 1985. One female, 1 deutonymph and 2 larvae CNAC007046-49, ex Cyclura n. nubila, 1km SE from Hotel María La Gorda, María La Gorda, Mpio. Sandino, Pinar del Río, Cuba, 21°41'55.34” N, – 84°29'32.57” W, 10m asl, 02 November 2011, coll. L. Márquez-Llauger.
Type host: Cyclura nubila nubila, Cuban iguana (Reptilia: Squamata: Iguanidae).
Site of infestation: head near the ears.
Geographic range: known only from Cuba. Geckobiella javieri is a monoxenous parasite of the iguana Cyclura n. nubila from Cuba.
Remarks. Recently, Paredes-León et al. (2012) revised the genera Hirstiella and Cyclurobia. They concluded, based on a phylogenetic analysis of morphological characters (mainly of females), that these genera were junior synonyms of Geckobiella. Previously, Cyclurobia was synonymized under Hirstiella by Bochkov (2008), however, no additional evidence on the relationship of those genera was contributed. In addition, the close relationship between Cyclurobia javieri and members of Hirstiella (particularly H. diolii) was highlighted by Baker (1998) and Walter and Shaw (2002), and posteriorly these were corroborated as sister species (Paredes-León et al., 2012) Both mite species are associated to iguanids of the genus Cyclura.
The finding of immature mite specimens, together with adult females parasitizing the same host species, allowed us to associate them with great certainty as Geckobiella javieri; and even though that these specimens were analyzed by Paredes-León et al. (2012) to corroborate the taxonomic status of Cyclurobia, the description of the adult female had not been carried out. Furthermore, we can assure that the morphological characters of these females are in agreement with the diagnosis of the genus Geckobiella, and that they seem to be very closely related to those oligotrichous species in the genus that parasitize iguanid lizards.
The leg chaetotaxy of immature specimens was analyzed and corrected. We have noticed some differences in number of setae between our own observations and those reported by de la Cruz (1984), but we consider that these discrepancies might be due to the difficulty of the observation of some small setae. Two types of larvae (named “male” and “female” larvae) were proposed and described by de la Cruz (1984); however, in our samples we found only one type, which based on their small size, and the setal form of dorsal idiosomal setae correspond to the “male” larvae.
Geckobia tarentolae de la Cruz
Geckobia tarentolaede la Cruz, 1973: 1
Diagnosis. Adult female with hypertrichous idiosoma; prodorsal shield present, and with 4 pairs of thick and short setae, with distal half peripectinate; 1 pair of ocular platelets each adjacent to anterolateral margin, including 1 eye and 2 or 3 setae subequal in shape as those in prodorsal shield; setation of trochanters-tibiae of legs I-IV corresponding to group 4: 1-1-1-1, 3-2-2-2, 1(κ)-0-0-0, 5-5-5-5; tarsal setation of legs I-IV corresponding to group A: 14(ω)-10(ω)-10-10; setation on coxae I-IV: 2-2-2-3.
Taxonomic summaryType locality: Cueva del Gato, Sagua La Grande, Villa Clara, Cuba.
Type specimens: female holotype and paratypes (females, males and deutonymphs) IESCA.
Material examined: 3 females, 2 males and 2 deutonymphs paratypes (IESCA10783-84; 10789;107 95; 10798; 10804; 10807).
Type host: Tarentola americana (Gray), American wall gecko (Reptilia: Squamata: Phyllodactylidae).
Site of infestation: on toe lamellae of the adhesive pad (de la Cruz, 1973).
Geographic range: known only from Cuba; Geckobia tarentolae is a monoxenous parasite of the gecko Tarentola americana from Cuba.
Remarks. The leg setation of Geckobia tarentolae female was not fully described by de la Cruz (1973), and for the males, some leg setae, notably on femur I, tibiae I-IV, and tarsi I-IV were omitted. Some groups of species were proposed in the genus on the basis of leg chaetotaxy, groups 1-4 from the trochanter to the tibia (Jack, 1964; Bochkov and Mironov, 2000), and 2 sorts of tarsal chaetotaxy (A or B) were identified (Jack, 1964). Our own observations placed G. tarentolae in the group 4 of trochatera-tibial chaetotaxy whereas the tarsal chaetotaxy corresponds to the Jack's model A. Leg setation of females, males and deutonymphs is identical, except on coxae IV that has 2 setae in deutonymphs, and 2, 3 or 4 setae in males. Measurements and detailed leg chaetotaxy, according with the nomenclature proposed by Grandjean (1944), are not provided because the specimens analyzed are poorly preserved.
Adult females of Geckobia tarentolae differs from the other 2 species in the group 4 by the poor number of setae on prodorsal shield (4 pairs versus 18–20 in G. indica Hirst, 1917 and 16–22 in G. anocellatusBochkov and Mironov, 2000), by the presence of eyes (eyes absent in G. anocellatus), and position of eyes which are located on platelets adjacent to the prodorsal shield in G. tarentolae whereas in G. indica the eyes are located directly on the prodorsal shield.
Geckobia hemidactyli Lawrence
Geckobia hemidactyliLawrence, 1936: 14; Jack 1961: 253
Diagnosis. Adult female with hypertrichous idiosoma; prodorsal shield present with cuticle weakly striated, and with 15–17 pairs of thick, short and peripectinate setae; 1 pair of eyes located on the antero-lateral margins of prodorsal shield; setation of trochanters-tibiae of legs I-IV corresponding to group 1: 1-1-1-1, 3-2-2-2, 1(κ)-0-0-1, 55-5-5; tarsal setation of legs I-IV corresponding to group A: 14(ω)-10(ω)-10-10; setation on coxae I-IV: 2-2-2-3.
Taxonomic summaryType locality: Driefontein, Southern Rhodesia (now known as Zimbabwe) (Lawrence, 1936).
Type specimens: probably Iziko Museums of Cape Town (formerly South African Museum) or Natal Museum, South Africa.
Type host: Hemidactylus tasmani Hewitt 1932, Tasmanian leaf-toed gecko (Reptilia: Squamata: Gekkonidae).
Material examined: 2 females 0SAL0067340; 0067342, ex Hemidactylus mabouia, Sao Paulo, Brazil, 11 March 1977, coll. D. Baggio. No Cuban specimens were available. Site of infestation: undetermined.
Geographic range: Africa (South) (Lawrence, 1936), Ascension Island (South Atlantic Ocean) (Jack, 1961), South America and the Caribbean (Martínez-Rivera et al., 2003). Introduced to Cuba. Geckobia hemidactyli is a stenoxenous parasite of the gecko genus Hemidactylus.
Remarks. Geckobia hemidactyli pertains to the “leg group” 1 and to the “tarsal group” B according with the number of setae on trochanter-tibia I-IV and tarsi I-IV, respectively (Jack, 1964). The adult female of this species was described by Lawrence (1936) from the gekkonid lizard Hemidactylus tasmani from Zimbabwe and including the additional record from H. mabouia in Democratic Republic of the Congo. Male, deutonymph and larva were described by Jack (1961) from H. mercatorius Gray 1842 from Ascension Island (Atlantic Ocean). Additional geographic data of G. hemidactyli parasitizing H. mabouia were recorded by Martínez-Rivera et al. (2003) for South America and the Caribbean, including 1 locality in Cuba (Guantanamo). This mite species has been also mentioned from the Mediterranean Region and Asia on H. frenatus and H. mercatorius by Martínez-Rivera et al. (2003) and Fajfer (2012) but without providing the original source of these records. The expansion of the lizard has certainly expanded the geographic area of the parasite.
Key for identification of adult females of pterygosomatid mites in Cuba.
- 1.
Idiosoma subcircular to broadly oval, with numerous dorsal setae (more than 20 pairs); coxae III-IV with large thickened setae (spur-like)……Geckobia…… 2
–. Idiosoma clearly longer than wide, with few dorsal setae (less than 20 pairs); coxae III-IV with simple and pectinate setae …… 3
- 2.
Prodorsal shield with 4 pairs of setae, eyes on ocular platelets located adjacent to anterolateral margin of prodorsal shield and with 2–3 pairs of setae; genua IV without setae …… Geckobia tarentolae de la Cruz
–. Prodorsal shield with more than 15 pairs of setae; eyes located on prodorsal shield; genua IV with 1 seta (v') …… Geckobia hemidactyli Lawrence
- 3.
Prodorsal shield shaped as inverted triangle and with 3 pairs of setae (vi, ve and sci); dorsal setae c3 absent …… Bertrandiella griseldae Paredes-León, Cuervo-Pineda and Pérez sp. nov.
–. Prodorsal shield oval and with 2 pairs of setae (vi and sci); dorsal setae c3 present. Geckobiella javieri (de la Cruz)
We provide an extended taxonomic diagnosis for the genus Bertrandiella which now includes females with 1 solenidion (ω1) on tarsus I (i.e., B. otophila, B. jimenezi (Paredes-León and Morales-Malacara, 2009) and B. chamelaensisParedes-León, Klompen and Pérez, 2012) as females with 2 solenidia (ω1 and ω2) on tarsus I (B. griseldae n. sp.); however, the female of B. tenuipes (Hirst 1917) is unknown.
Bertrandiella is endemic to the Americas and its species display a high host-specificity including monoxenous (occurs on single host species) and stenoxenous (occurs on species of single host genus). Geckobiella also is endemic to the Americas and its species also displays a high host-specificity including monoxenous, stenoxenous and oligoxenous (occurs on hosts of 2 or more genera of the same family).
In Geckobia, that is the richest genus of the family Pterygosomatidae including 71 species with a worldwide distribution, the majority of the species are monoxenous (Fajfer, 2012; Paredes-León, 2013). One of the 2 species of Geckobia recorded in Cuba, G. hemidactyli is not native and has certainly expanded the geographic area alongside its host (Martínez-Rivera et al., 2003). Contrary, the native Geckobia tarentolae is the unique mite species recorded from New World geckos in the genus Tarentola (family Phyllodactylidae) that currently comprises 21 species.
Eighteen species of Tarentola are distributed across the Mediterranean Basin as well as on many Macaronesian islands. In the Americas, 3 species occurs: T. americana from Cuba and the Bahamas; T. crombiei endemic to Cuba; and the probably extinct T. albertschwartzi, known from a single specimen from Jamaica (Rato et al., 2012). The gecko Tarentola crombiei was considered as a cryptic species resembling T. americana (Weiss and Hedges, 2007), and posteriorly was diagnosed and described by Díaz and Hedges (2008). Tarentola americana and T. crombiei are sympatric only at the southeastern coast, and the records of Geckobia tarentolae are from Central region of the Island, therefore correspond to the host Tarentola americana. In the genus Tarentola, the species T. americana is the most divergent lineage, not closely related of any of its congeners (Weiss and Hedges, 2007). Molecular clock analyses have suggested that T. americana diverged from the Old World species approximately 10.617 million years ago (Carranza et al., 2002). Regarding the Neotropical members of Tarentola, these seem to be the result of a post-Gondwanan dispersal by natural transmarine colonization from the Old World (Carranza et al., 2002; Rato et al., 2012).
The Cuban mite Geckobia tarentolae has a similar divergent history same as its host Tarentola americana, because this mite presents no modified ventral setae instead of ventral scale like setae present in the other species of Geckobia collected on the genus Tarentola in Mediterranean Region. Additionally, G. tarentolae pertains to the “leg group” 4 unlike the other species of Geckobia collected on the genus Tarentola that are classed into the “leg group” 1 (Bertrand et al., 2012). The phylogenetic relevance of these and another characters need to be evaluated and a major effort in the study of geckobian mites is primary for a better understanding of the co-evolutionary history between Geckobia mites and Tarentola geckos.
To Lázaro Márquez-Llauger (Director of Parque Nacional Guanahacabibes, Cuba) for allowing us inspect for mites 2 wild iguanas in situ. We thank Griselda Montiel-Parra (CNAC) and Roberto Novo-Carbó (Pinar del Río, Cuba) for their field support during the collection of mites. To Hans Klompen (Acarology Laboratory, Ohio State University, Columbus, Ohio, USA), Janet Beccaloni (The Natural History Museum, London, UK), Maira Fernández Zequeira and Nayla García Rodríguez (Instituto de Ecología y Sistemática (IES), Cuba) for the loan of pterygosomatid mites. To Ariel Rodríguez (IES) for allowing us to inspect some iguanids deposited at Herpetological Collection. To Berenit Mendoza-Garfias for producing the SEM micrographs and Julio César Montero-Rojas for helping with micrographs edition (Instituto de Biología, UNAM). We also thank our friends Carlos Santibáñez-López and Alejandro Oceguera-Figueroa for the revision of the English language of our manuscript. We thank Juan J. Morrone and 2 anonymous reviewers for reviewing and suggesting improvements to text. The first author thanks Conacyt for the scholarship (42361) to carry out his Ph.D. studies, and to the Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México. Additional financial support for fieldwork was obtained through Conacyt from the grant “Estudio comparativo de la diversidad de ácaros domésticos (Acari: Arachnida) en 4 localidades de México y Cuba con gran incidencia de personas alérgicas” in charge of the third author.