Pamirosa kudratbekovi, Fomichev & Omelko & Marusik, 2024

Fomichev, Alexander A., Omelko, Mikhail M. & Marusik, Yuri M., 2024, Pamirosa gen. nov., unexpected record of Artoriinae (Araneae, Lycosidae) from the rooftop of Pamir, Central Asia, Zoosystematics and Evolution 100 (3), pp. 1005-1015 : 1005-1015

Pamirosa kudratbekovi sp. nov.

Figs 1–9 , 10–15 , 16–20 , 21–30 , 31–38 , 49–50 , 51–53 , 54

Types.

Holotype ♂ ( ISEA, 001.9080 ) and paratype 1 ♀ ( ISEA, 001.9081 ) Tajikistan, Gorno-Badakhshan Region, Muzkol Mt Range, near Ak-Baital Mt Pass (38 ° 32.871 ' N, 73 ° 33.736 ' E), scree, 4700 m, 19 Jul. 2023, leg. A. A. Fomichev & Y. V. Dyachkov.

Diagnosis.

See generic diagnosis.

Description.

Male. Total length 8.2. Carapace: 4.35 long, 3.25 wide. Abdomen: 3.95 long, 2.6 wide. General appearance as in Figs 1 , 2 . Coloration. Carapace dark brown with brown, barely visible median band; lateral bands indistinct. Eye field almost black. Clypeus, chelicerae and labium dark brown. Endites and coxae yellow-brown. Sternum brown, darker at margins. Palps dark brown, distal part of cymbium yellow. Legs dark brown, without annulations. Abdomen gray, with dark brick red-colored cardiac mark. Spinnerets gray. Eye sizes and interdistances: AME 0.1, ALE 0.11, PME 0.41, PLE 0.3, AME – AME 0.16, AME – ALE 0.16, PME – PME 0.43, PLE – PLE 1.26. Width of anterior eye row 0.86, 2 nd row 1.13, 3 rd row 1.57. Clypeus height at AME 0.16. Chelicerae with 3 promarginal and 3 retromarginal teeth. For legs measurements see Table 1 . For legs spination see Table 2 .

Male palp as shown in Figs 5 – 30 . Femur 2.5 times longer than tibia, with 3 dorsal and 2 prolateral spines. Patella 1.4 times longer than tibia, with one prolateral spine. Tibia 2.9 times shorter than cymbium. Cymbium broad and rounded; length / width ratio 1.6. Tip of cymbium bent dorsally and equipped with stick-like (NS) and plumose setae (PS). Subtegulum (St) very small, oval located on retrolateral side of bulb. Tegulum (Te) circular, length / width ratio 0.74; anterior part with long and narrow retrolateral ridge (RR) on ventral margin of conductor (Cn) and triangular prolateral outgrowth (PO); conductor not tapering. Median sector of anterior edge of tegulum covered with number of short, thread-like denticles (TD). Sperm duct (SD) S-shaped in retrolateral view; tegular apophysis complex. Thin stalk of tegular apophysis (TS) starts from dorsal surface of tegulum. Tegular apophysis massive, hammer-shaped; prolateral process of tegular apophysis (PP) triangular; retrolateral process of tegular apophysis (RP) semicircular, with tip bent ventrally. Palea absent. Embolus large, coiled in 2 planes; proximal part (PE) with accompanying membrane (AM) forming loop ca 270 °. Basoembolic apophysis (BA) circular in ventral view, strongly sclerotized, in intact bulb tightly fixed between prolateral outgrowth of tegulum (PO) and prolateral process of tegular apophysis (PP). Terminal apophysis (Tr) elongated, with sharply pointed tip. Embolic division with small, sharply pointed dorsal process (DP), partly hidden by embolus in ventral view. Distal part of embolus (DE) tightly twisted, making two complete loops (720 °).

Female. Total length 8.0. Carapace: 4.1 long, 3.0 wide. Abdomen: 4.0 long, 2.45 wide. General appearance as in Figs 28 , 29 . Coloration as in male, but palps, legs, venter of the abdomen and spinnerets lighter. Dorsal surface of abdomen with blurred herringbone pattern. Eye sizes and interdistances: AME 0.1, ALE 0.13, PME 0.39, PLE 0.27, AME – AME 0.19, AME – ALE 0.16, PME – PME 0.36, PLE – PLE 1.07. Width of anterior eye row 0.87, second row 1.06, third row 1.46. Clypeus height at AME 0.19. Chelicerae as in male. For legs’ measurements see Table 3 . For legs’ spination see Table 4 .

Epigyne as shown in Figs 33–38 . Epigynal plate trapezoidal, convex, with large trapezoidal fovea located posteriorly, septum absent. Fovea (Fo) ca. 3 times wider than long. Copulatory openings (CO) located at antero-lateral parts of fovea. Copulatory ducts (CD) membranous, corkscrew-shaped, form approximately 3 turns around fertilization ducts (FD). Receptacles (Re) screw-shaped, strongly sclerotized; heads (RH) touching each other. Fertilization ducts (FD) sinusoidal, strongly sclerotized. Rod-shaped glands (RG) located posterior to the copulatory openings.

Etymology.

The specific name is a patronym in honour of Uvaido Kudratbekov (Porshinev, Tajikistan) who helped to organize an expedition to Pamir Mountains in which the types of this new species were collected.

Distribution.

Known only from the type locality (Figs 51 – 54 ).

Note.

Having only one female, we cannot cut the single epigyne to check the origin of membranous ducts in endogyne, which would allow us to perceive if they are copulatory or fertilization ducts. Membranous parts of the endogyne are unknown in other lycosids occurring in the Holarctic.

Habitat.

The specimens were collected among stone screes (Fig. 51 ) on elevations about 4700 m.

Comments.

Among the genera of alpine Lycosidae inhabiting stone screes in the Palearctic are the following: Acantholycosa Dahl, 1908 ; Dzhungarocosa ; Evippa Simon, 1882 ; Gulocosa Marusik et al. 2015 ; Mongolicosa Marusik et al. 2004 and Sibirocosa Marusik et al. 2004 (see Table 5 ). Species from all of these genera share one common character: they have more than three pairs of ventral spines on tibia I. This is true for the widespread Acantholycosa complex (group of genera) and in genera not related to Acantholycosa Dahl, 1908 ( Marusik et al. 2015; Fomichev and Marusik 2017; Fomichev 2022). Unlike all other scree-dwelling wolf-spiders, P. kudratbekovi sp. nov. has only three pairs of ventral tibial spines on leg I, as in many non- scree dwelling Pardosinae spiders (cf. Figs 49 , 50 , 39–48 ).

Figures

Figure 54. Collecting localities of Artoriinae in Palaearctic and Indo-Malayan Realm. Circle – Pamirosa kudratbekovi sp. nov.; square – Artoria spp.; diamond – Sinartoria spp.; triangle – Lycosella spp. ? – record without precise location.

Figures 1–9. Male of Pamirosa kudratbekovi sp. nov. 1, 2. Habitus; 3. Cephalic part; 4. Leg I; 5. Whole palp; 6–9. Distal part of the palp. 1, 6. Dorsal; 2, 8. Ventral; 3. Anterior; 4–5, 9. Retrolateral; 7. Prolateral. Abbreviation: SS – stick-like seta. Scale bars: 2 mm (1, 2); 0.2 mm (3–9).

Figures 10–15. Bulb of Pamirosa kudratbekovi sp. nov. 10, 11. Prolateral; 12, 13. Ventral; 14, 15. Retrolateral. Abbreviation: St – subtegulum. 11, 13, 15. Courtesy of Galina N. Azarkina. Scale bars: 0.2 mm.

Figures 16–20. Embolic division of Pamirosa kudratbekovi sp. nov. 16. Prolateral; 17. Ventral; 18. Retrolateral; 19. Dorsal; 20. Anterior. Abbreviations: AM – accompanying membrane, BA – basoembolic apophysis, DE – distal part of embolus, DP – dorsal process of embolic division, PE – proximal part of embolus, Tr – terminal apophysis. Scale bar: 0.2 mm.

Figures 21–30. Male of Pamirosa kudratbekovi sp. nov. 21–24. Tegulum; 25. Embolus; 26. Embolic division, 27–29. Tegular apophysis; 30. Tip of cymbium. 21, 29. Prolateral; 22, 24, 26, 28. Ventral; 23. Retrolateral; 25. Pro-ventral; 27, 30. Dorsal. Abbreviations: BA – basoembolic apophysis, Cn – conductor, DE – distal part of embolus, DP – dorsal process of embolic division, PE – proximal part of embolus, PO – prolateral outgrowth of tegulum, PP – prolateral process of tegular apophysis, PS – plumose seta, RP – retrolateral process of tegular apophysis, RR – retrolateral ridge of tegulum, SD – sperm duct, SS – stick-like seta, St – subtegulum, TA – tegular apophysis, TD – threadlike denticles, Te – tegulum, Tr – terminal apophysis, TS – stalk of tegular apophysis. Scale bars: 0.2 mm (21–24, 26); 0.1 mm (25); 0.15 mm (27–29); 0.1 mm (30).

Figures 31–38. Female of Pamirosa kudratbekovi sp. nov. 31–32. Habitus; 33–38. Epigyne. 31. Dorsal; 32. Ventral; 33. Intact, ventral; 34. Dissected, ventral; 35. Macerated, ventral; 36. Macerated, dorsal; 37, 38. Macerated and painted, dorsal. Abbreviations: CD – copulatory duct, CO – copulatory opening, EP – epigynal plate, FD – fertilization duct, Fo – fovea, Re – receptacle, RG – rod-shaped gland, RH – head of receptacle. Scale bars: 2 mm (31, 32); 0.2 mm (33–37); 0.1 mm (38).

Figures 39–50. Retro-ventral view of the tibia I. 39, 40. Acantholycosa sayanensis from South Siberia; 41, 42. Dzhungarocosa omelkoi from Kazakhstan; 43, 44. Mongolicosa glupovi from South Siberia; 45, 46. Sibirocosa arsenyevi from Far East of Russia; 47, 48. Evippa sp. from Pamir Mountains; 49, 50. Pamirosa kudratbekovi sp. nov. 39, 41, 43, 45, 47, 49. Male; 40, 42, 44, 46, 48, 50. Female. Arrows indicate ventral spines (some spines are broken). Scale bar: 1 mm.

Figures 51–53. Pamirosa kudratbekovi sp. nov. 51. Habitat; 52, 53. Collecting locality. The frame on Fig. 53 refers to the content of Fig. 52. The country names are written in black font. The names of mountain systems are written in dark blue font.