Pholcus sidorenkoi Dunin, 1994

Dong, Tingting, Zheng, Guo, Davlatov, Abdulaziz, Yao, Zhiyuan & Li, Shuqiang, 2017, Two new species of the spider genus Pholcus Walckenaer, 1805 (Araneae, Pholcidae) from Tajikistan, with the first description of female Pholcus sidorenkoi Dunin, 1994, European Journal of Taxonomy 301, pp. 1-14 : 9-12

Pholcus sidorenkoi Dunin, 1994

Figs 5–7

Pholcus sidorenkoi Dunin, 1994: 136 , figs 1–7.

Pholcus sidorenkoi – Huber 2011b: 340, figs 1538, 1642–1644.

Diagnosis

This species resembles P. cophenius Senglet, 2008 (see Senglet 2008: 365, figs 57–65) in having similar male chelicerae ( Fig. 6D ), appendix ( Fig. 6C ), and female external genitalia ( Fig. 6A ), but can be distinguished by slightly thicker male pedipalpal trochanter ( Fig. 5 A–B), by absence of distal sclerites on less curved procursus ( Fig. 5 C–D), by more elongate uncus ( Fig. 6C ) ( Huber 2011b), and by more elongate vulval pore plates ( Fig. 6B ).

Material examined

TAJIKISTAN: 1 ♂, 1 ♀, Vazob Region, Hazora Village, 39°03.362′ N, 68°52.273′ E, 2584 m, 21 Jul. 2014, Z. Yao leg.

Description

Male

MEASUREMENTS. Total length 5.26 (5.71 with clypeus), carapace 1.66 long, 1.88 wide, opisthosoma 3.60 long, 1.48 wide. Leg I: 40.16 (10.13 + 0.66 + 10.78 + 16.35 + 2.24), leg II: 29.28 (7.95 + 0.80 + 7.69 +11.54 + 1.30), leg III: 18.05 (6.54 + 0.72 + 5.64 + 5.15 + 1.06), leg IV: 28.91 (8.40 + 0.77 + 7.56 + 10.90 + 1.28); tibia I L/d: 64. Distance PME–PME 0.34; diameter PME 0.11; distance PME–ALE 0.06; distance AME–AME 0.05; diameter AME 0.08.

COLOR. Carapace yellowish, with brown radiating marks extending to ocular area; ocular area yellowish, with brown median stripe; sternum yellowish, with brownish marks. Legs yellowish, femora (subdistally)

and tibiae (subdistally) with darker rings. Opisthosoma yellowish, with brown spots dorsally and laterally.

BODY. Habitus as in Fig. 6 E–F. Ocular area elevated, without eye-stalks. Thoracic furrow absent. Sternum wider than long (1.17/0.98).

CHELICERAE. As in Fig. 6D , with pair of proximo-lateral apophyses, pair of distal apophyses provided with two teeth each, and pair of frontal apophyses.

PEDIPALPS. As in Fig. 5 A–B; trochanter with long curved ventral apophysis; femur with small dorsal apophysis proximally and small ventral modification; procursus simple proximally but complex distally, with two prolatero-dorsal spines; uncus with scaly edge; appendix with scales distally and flat prolateral process; embolus short and weakly sclerotized, with some transparent projections distally. Retrolateral trichobothrium of tibia I at 6%; legs with short vertical setae on tibiae, metatarsi and tarsi; without spines and curved setae; tarsus I with approximately 5 distinct pseudosegments.

Female

Similar to male, habitus as in Fig. 6 G–H. Total length 5.10 (5.64 with clypeus), carapace 1.50 long, 1.80 wide, opisthosoma 3.60 long, 2.03 wide; tibia I: 8.97; tibia I L/d: 56. Distance PME–PME 0.27; diameter PME 0.10; distance PME–ALE 0.05; distance AME–AME 0.05; diameter AME 0.08. Sternum wider than long (1.14/1.00). External genitalia ( Fig. 6A ) with knob. Vulva ( Fig. 6B ) with sclerotized anterior arch and two nearly elliptic pore plates.

Natural history

The species was found in an old house.

Distribution

Russia (Samara, see Huber 2011b: 339, fig. 1636) and Tajikistan (Dushanbe, see Huber 2011b: 339, fig. 1636; Vazob, Fig. 7 ).

Figures

Fig. 5. Pholcus sidorenkoi Dunin, 1994, ♂. A–B. Pedipalp (A. Prolateral view. B. Retrolateral view). C–D. Distal part of procursus (C. Prolateral view. D. Retrolateral view). Abbreviations: a = appendix; b = bulb; e = embolus; pr = procursus; u = uncus. Scale bars: A–B = 0.20 mm; C–D = 0.05 mm.

Fig. 6. Pholcus sidorenkoi Dunin, 1994, ♂ (C–F) and ♀ (A–B, G–H). A. External genitalia, ventral view. B. Vulva, dorsal view. C. Bulbal apophyses, prolateral view. D. Chelicerae, frontal view. E–H. abitus (E, G. Dorsal view. F, H. Ventral view). Abbreviations: a = appendix; da = distal apophysis; e = embolus; fa = frontal apophysis; pa = proximo-lateral apophysis; pp = pore plate; u = uncus. Scale bars: A–D = 0.10 mm; E–H = 1.00 mm.

Fig. 7. New distribution records of Pholcus species from Tajikistan. ① Pholcus saidovi Yao & Li sp. nov. ② P. shuguanensis Yao & Li sp. nov. ③ P. sidorenkoi Dunin, 1994.