Pterygosoma theobaldi Fajfer, Melnikov and Dabert, 2016

Fajfer, Monika, 2020, A systematic revision of the scale mite genus Pterygosoma Peters, 1849 (Acariformes: Pterygosomatidae), Zootaxa 4805 (1), pp. 1-147 : 48

Pterygosoma theobaldi Fajfer, Melnikov and Dabert, 2016 ( Figs 37–39 )

Pterygosoma theobaldi Fajfer, Melnikov and Dabert, 2016: 806 , figs 14–16

Type host: Phrynocephalus theobaldi (Sauria: Agamidae ). Type locality: INDIA [Himalayas, near Lake Pangong].

Diagnosis. FEMALE. Gnathosoma . Chelicerae with basal swollen part and slender distal part subequal in length. Fixed cheliceral digit with several tines. Palpal tibia with short claw. Palpal tarsi with 3 setae. Subcapitular setae n absent. Hypostome with slightly flattened apex. Idiosoma 335–465 long and 635–795 wide. Dorsum. Anterior part with 8–9 pairs of serrate setae arranged in 2 groups: anterior group consisting of 3 setae, lateral group consisting of 4–7 setae. One pair of slightly serrate setae present posterior to lateral groups. Medial part of idiosoma with 4 pairs of dorso-median setae dm1–dm4. Setae dm1 and dm2 slightly serrate, setae dm3 and dm4 serrate. Postero-lateral parts of idiosoma with 4–6 pairs of serrate setae. Eyes present. Venter. Setae vm1 filiform, vm2 and vm3 serrate. Genital slit situated mainly ventrally. Genital series represented by spine-like setae g1–g4. Pseudanal series represented by 1 pair of smooth or very slightly serrate setae ps1 and 4 pairs of paddle-shaped setae ps2–ps5. Legs as in transvaalense group ( Tab. 1). All setae on each podomere filiform, except for slightly serrate setae v’TiII–IV and v”TiII–IV. Setation of tarsi I–IV as in group A ( Tab. 2). Setae tc’ of legs II–IV and setae a’, a”, u’, u” of legs I–IV smooth, setae vs’ and vs” of legs II–IV slightly serrate.

MALE. Gnathosoma as in female. Idiosoma 180 long and 275 wide. Dorsum with 3 groups of serrate setae: 6 and 7 antero-lateral setae on right and left side of idiosoma , respectively; 3 pairs of dorso-median setae: dm1–dm3 and 5 pairs of postero-lateral setae. Eyes present. Aedeagus about 110 long, directed forward; genito-anal opening with 2 pairs of filiform setae. Venter. Setae vm1 filiform, vm2 and vm3 serrate. Legs as in female, except for absence of setae v’TrIV. All setae on each podomere filiform, except for slightly serrate setae dFI–II, v’TiIII–IV, v”TiIII–IV. Setae vs’ of tarsi III–IV slightly serrate.

Type material (examined). Female holotype and 13 female paratypes from Phrynocephalus theobaldi Blyth (Sauria: Agamidae ) ( ZISP 28778), INDIA, Himalaya, Lake Pangong, 21 October 2013, coll. by the members of the Second West Himalaya Expedition arranged by St. Petersburg Association of Scientists & Scholars.

Type material deposition. Female holotype and 4 female paratypes are deposited in the ZISP , 9 female and 1 male paratypes are deposited in the AMU .

Host and distribution. This species is known only from Phrynocephalus theobaldi from India [Himalayas, Lake Pangong] ( Fajfer et al. 2016).

Figures

FIGURE 37. Pterygosoma theobaldi Fajfer Melnikov and Dabert 2016, female. A, dorsal view; B, ventral view (after Fajfer et al. 2016).

FIGURE 38. Pterygosoma theobaldi Fajfer Melnikov and Dabert 2016, female. A, gnathosoma in dorsal view; B, tarsi I in lateral view; C, tarsi II in lateral view; D, genital region, enlarged (after Fajfer et al. 2016).

FIGURE 39. Pterygosoma theobaldi Fajfer Melnikov and Dabert 2016, male. A, dorsal view; B, ventral view (after Fajfer et al. 2016).