Anemesia pococki Zonstein 2018, sp. nov.
Creators: name: Zonstein, Sergei
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Cyrtaucheniidae
Anemesia
Anemesia pococki

description: Anemesia pococki sp. nov.
urn:lsid:zoobank.org:act: 0A90722E-CDDE-4595-A948-8E2E014C2153 Figs 3, 16, 27, 50, 64, 78, 92, 105, 119, 143–144, 158–160, 175, 193–194, 228–229, 269–270, 291, 306–307, 369
Diagnosis
Anemesia pococki sp. nov. generally resembles a paler coloured version of A. birulai. However, it differs from the latter species by the aspinose cymbium and a less tapering embolus in males (Figs 175, 193– 194; cf Figs 173, 188–190), as well as by less sclerotised and more diverged receptacles in females (Figs 228–229; cf Figs 224–227).
Etymology
The specific name is a patronym in honor of Dr Reginald I. Pocock, the noted British arachnologist (1863–1947), who provided and published many studies on the Mygalomorphae; he described, in particular, both the genus Anemesia in 1895 and its type species a few years earlier (1889).
Material examined
Holotype
TURKMENISTAN: Ƌ, surroundings of Nardevanly spring, Zulfagar Mts, 900 m, 35°47′ N, 61°21′ E, 16 Apr. 1993, S. Zonstein leg. (SMNH).
Paratypes
TURKMENISTAN: 4 ƋƋ, 7 ♀♀, same collection data as for holotype but 600–1000 m, 16–17 Apr. 1993 (SMNH).
Description
Male (holotype)
HABITUS. See Fig. 3.
MEASUREMENTS. TBL 13.10, CL 5.63, CW 4.73, LL 0.63, LW 1.05, SL 2.77, SW 2.53.
COLOUR. Carapace light brownish orange with anterior edge darker and thoracic part lighter, chelicerae light orange; palps and legs dorsally less intensive orange; sternum, labium, maxillae and legs ventrally pale brownish yellow; eye tubercle blackened; abdomen dorsally pale yellowish grey with brown pattern
consisting of moderately wide median lanceolate spot and six paired transverse and slightly inclined short stripes, ventral part of abdomen pale yellow, spinnerets pale brownish yellow.
PROSOMA. Clypeus and eye tubercle as shown in Fig. 50. Eye diameters and interdistances: AME 0.16(0.20), ALE 0.27, PLE 0.21, PME 0.10, AME–AME 0.15(0.11), ALE–AME 0.09(0.07), ALE–PLE 0.12, PLE–PME 0.03, PME–PME 0.44. Thoracic fovea short and nearly pit-like, with anterior edge slightly recurved. Cheliceral rastellum composed of about 25 spikes grouped both in one transverse row in front of fang base and irregularly on low mound. Each cheliceral furrow with nine promarginal teeth and seven to eight smaller retromarginal teeth. Sternum, labium and maxillae as shown in Fig. 92. Maxillae with 30–32 cuspules each.
SPINATION. Palp: femur d3, pd2; patella pd1; tibia p1, r1, v1. Leg I: femur d5, pd3, rd2–3; patella p1; tibia p2, v5+m; metatarsus d1, pd2, v6. Leg II: femur d5, pd3, rd1; patella p1; tibia p3, v8; metatarsus p3, v7. Leg III: femur d4, pd3, rd3; patella p3, r2; tibia d1, p3, r3, v8; metatarsus pd4, p3, r2, v9; tarsus pv3. Leg IV: femur d5, p3, r3; tibia d1, p3, r3, v8; metatarsus pd2, p3, r7, v7; tarsus p2. Cymbium, patella IV and tarsi I and II aspinose.
LEGS. Tibia and metatarsus I as shown in Fig. 119. Scopula: distal on metatarsi I–II, entire on tarsi I and II, divided on tarsi III, vestigial on tarsi IV. Trichobothria: 2 rows of 8 each on tibiae, 12–14 on metatarsi, 12–13 on tarsi. PTC I–III with 9–10 teeth on both outer and inner margin, PTC IV with 8 and 5–7 teeth respectively.
PALP. Tibia, cymbium and palpal organ as shown in Figs 175, 193–194. Tibia swollen, with few spines and numerous ventral thick bristles (Fig. 175). Embolus tapering slightly curved (Figs 193–194).
SPINNERETS. See Fig. 269. PMS: length 0.38, diameter 0.20. PLS: maximal diameter 0.57; length of basal, medial and apical segments 0.92, 0.67, 0.33; total length 1.92; apical segment triangular.
LEG MEASUREMENTS. Ƌ(♀)
Female (paratype)
HABITUS. As shown in Figs 16, 27.
MEASUREMENTS. TBL 18.90, CL 6.03, CW 4.74, LL 0.67, LW 1.18, SL 2.95, SW 2.62.
COLOUR. Similar to that of male, but slightly paler.
PROSOMA. Clypeus and eye tubercle as shown in Fig. 64. Eye diameters and interdistances: AME 0.16(0.22), ALE 0.33, PLE 0.22, PME 0.12, AME–AME 0.20(0.14), ALE–AME 0.14(0.11), ALE–PLE 0.13, PLE–PME 0.03, PME–PME 0.54. Cheliceral rastellum consists of 20–25 spikes located in front of fang base and on low mound (as in Figs 143–144). Each cheliceral furrow with 7 promarginal teeth and 5–6 smaller retromarginal teeth. Sternum, labium and maxillae as shown in Fig. 92. Maxillae with 21–26 cuspules each.
LEGS. Scopula: entire on metatarsus I, distal on metatarsus II, entire on palpal tarsus and tarsus I, narrowly divided on tarsus II, elsewhere absent. Trichobothria: 2 rows of 6–8 each on tibiae, 10–14 on metatarsi, 11–13 on tarsi, 8–9 on palpal tarsus. Trichobothrial bases and tarsal organ of leg I as shown in Figs 158–159 and 160, respectively. Palpal claw with 4 promarginal teeth. PTC I–II with 5–6 teeth on each margin; PTC III with 4–5 teeth on outer, 2–3 teeth on inner margins; PTC IV with 4 and 0–2 teeth, respectively.
SPINATION. Palp: femur pd1; patella pd3, pv1; tibia pd3, p3, v9–10; tarsus v4–5. Leg I: femur pd1; patella p1; tibia p2, v4; metatarsus v5. Leg II: femur pd1; patella p1; tibia p3, v4; metatarsus p1, v7. Leg III: patella p3; tibia d1, p2–3, r1–2, v4; metatarsus d1, pd4, rd3, v7; tarsus p1, v1. Leg IV: tibia v6; metatarsus pd1, rd2, v9. All femora with dorsal median row of 6–8 long slender bristles; patella IV and tarsi I, II and IV aspinose.
SPERMATHECAE. Multilobate with 2–3 receptacles set on common base (as in Fig. 228).
SPINNERETS. See Fig. 270. PMS: length 0.52, diameter 0.25. PLS: maximal diameter 0.60; length of basal, medial and apical segments 1.10, 0.67, 0.45; total length 2.22; apical segment triangular. Spigots as shown in Fig. 291.
Variation
The length of the carapace varies from 5.26 to 5.70 in males and from 5.15 to 6.37 in females. The colouration varies very narrowly throughout the specimens. In females the number of retromarginal cheliceral teeth ranges from 5 to 8 (as in Fig. 78). Variants in the shape of the spermathecae are shown in Figs 228–229.
Habitat
Montane cereal steppe on a stony substrate, with dominating Hordeum bulbosum L. and Andropogon sp. (Fig. 307).
Distribution
The species is known only from the type locality (see Fig. 369).
description: Published as part of Zonstein, Sergei, 2018, A revision of the spider genus Anemesia (Araneae, Cyrtaucheniidae), pp. 1-100 in European Journal of Taxonomy 485 on pages 15-17, DOI: 10.5852/ejt.2018.485, http://zenodo.org/record/3829992