Coelotes suthepicus, Dankittipakul, Pakawin, Chami-Kranon, Thanaphum & Wang, Xin-Ping, 2005

Dankittipakul, Pakawin, Chami-Kranon, Thanaphum & Wang, Xin-Ping, 2005, Amaurobiidae) from Thailand, Zootaxa 970, pp. 1-11 : 4-6

Coelotes suthepicus sp. n.

Figures 4–8

Type material. HOLOTYPE: ɗ ( MHNG), THAILAND, Chiang Mai Province and District, Doi Suthep–Pui National Park, Doi Suthep, San Ku, 1600 m, evergreen hill forest, flight intercept trap, 8.–12.XI.2004, leg. S. Sonthichai & T. Chami­Kranon.

PARATYPES: 3 Ψ ( MHNG), from the type locality, 18.XI.2004, leg. S. Sonthichai, T. Chami­Kranon & A. Hasalem.

Diagnosis. Males of C. suthepicus sp. n. can be recognized by a short conductor and by the presence of a basal tooth on the conductor ( Figs 4–6 ). Females are distinguished by strongly convoluted spermathecae and large, club­shaped anterior end of copulatory ducts ( Fig. 8 ); their epigynes are provided with anteriorly notched atrium ( Fig. 7 ). Coelotes suthepicus sp. n. resembles European species, C. atropos (Walckenaer, 1830) but it can be distinguished from this species and all other congeners by characters mentioned above.

Etymology. The specific epithet refers to the type locality: suthepicus is a Latinized adjective of Suthep.

Description. ɗ (holotype). Total length 10.71. Carapace 5.02 long, 3.28 wide.

Eye sizes and interdistances: AME 0.18, ALE 0.20, PME 0.16, PLE 0.20; AME–AME 0.10, AME–ALE 0.10, PME–PME 0.19, PME–PLE 0.25, ALE–PLE 0.07; MOQ 0.58 long, front width 0.49, back width 0.52. Cheliceral groove with 3 promarginal and 3 or 4 retromarginal teeth.

Leg formula 1423 (17.86, 16.21, 13.65, 13.20). Leg measurements: femora: I 4.20, II 4.00, III 3.61, IV 4.31; patellae: I 1.98, II 1.89, III 1.39, IV 1.56; tibiae: I 4.10, II 3.02, III 2.51, IV 3.93; metatarsi: I 4.56, II 3.53, III 3.50, IV 4.25; tarsi: I 3.02, II 2.21, III 2.19, IV 2.16.

Male palp ( Figs 4–6 ): patellar apophysis (PA) relatively large, slightly curved distally; RTA long, extending beyond distal margin of tibia; RDTA relatively broad, widely separated from the RTA; cymbial furrow short; conductor short, bifurcate, with basal tooth; conductor lamella indistinct; a dorsal apophysis on the conductor (DC) with round apex, longer than conductor (C) when seen in ventral view; embolus originating probasally; median apophysis (MA) large, strongly sclerotized.

Ψ paratype. Total length 9.08. Carapace 4.55 long, 3.18 wide.

Eye sizes and interdistances: AME 0.10, ALE 0.15, PME 0.15, PLE 0.15; AME–AME 0.13, AME–ALE 0.07, PME–PME 0.15, PME–PLE 0.17, ALE–PLE 0.08; MOQ 0.45 long, front width 0.34, back width 0.42. Cheliceral groove provided with 3 promarginal and 4 retromarginal teeth, respectively.

Leg formula 4123 (12.69, 12.02, 10.69, 9.19). Leg measurements: femora: I 3.32, II 3.30, III 2.78, IV 3.58; patellae: I 0.91, II 0.89, III 0.90, IV 1.06; tibiae: I 3.22, II 2.58, III 2.08, IV 3.05; metatarsi: I 3.02, II 2.60, III 2.28, IV 3.35; tarsi: I 1.55, II 1.32, III 1.15, IV 1.65.

Epigyne ( Figs 7–8 ): epigynal hoods (H) located anterior to small, lateral epigynal teeth (ET). Internal structures with copulatory ducts (CD) anterior to the convoluted spermathecae situated close to each other; fertilization ducts (FD) simple, located posteriorly.

Natural history. Coelotes suthepicus sp. n. inhabits evergreen hill forest at 1,600 m altitudes where it occurs together with D. anthonyi . The latter species appears to occupy a wider altitudinal range: it was also found between 1,500 m and 1,600 m near the summit of Doi Pui. The male holotype was collected by a flight intercept trap placed on the forest floor. The female paratypes were obtained from pitfall traps. Traps were set up form July 2004 to February 2005 but mature spiders were collected only in November. Specimens collected at soil banks along the road to the summit all belong to D. anthonyi .

Distribution. Known only from the type locality.

Figures

FIGURES 4 – 8. Coelotes suthepicus sp. n., male holotype (4 – 6) and female paratype (7 – 8). Left male palp: ventral (4), prolateral (5) and retrolateral (6) view. Epigyne (7) and its internal structures (8). Scale lines: 0.5 mm (4 – 6); 0.25 mm (7 – 8).