Amauropelma jagelkii, Jager, 2012

Jäger, Peter, 2012, Asian species of the genera Anahita Karsch 1879, Ctenus Walckenaer 1805 and Amauropelma Raven, Stumkat & Gray 2001 (Arachnida: Araneae: Ctenidae), Zootaxa 3429 (1), pp. 1-63 : 53-54

Amauropelma jagelkii spec. nov.

Figs 179 , 227–247

Type material. Holotype male ( SMF), Laos, Luang Prabang Province, NE Luang Prabang, Nam Ou, Nong Khiao, Tham Pathok , N 20°33.082', E 102°37.935', 373 m altitude, in front of cave, sieving leaf litter, P. Jäger leg.

Etymology. This species is named in honour of my primary school teacher, Mr Siegfried Jagelki (Paderborn, Germany), for his ambitious and excellent lessons and teaching, an effort that should in general be more appreciated and honoured; name in genitive case.

Diagnosis. Small Ctenidae (total length male 4.8, female 5.5–7.0). Males may be distinguished from similar Laotian Amauropelma spp. by the transverse oval tegular apophysis, situated subcentrally on tegulum with retrolateral half of dorso-distal side excavated ( Figs 228, 230 ). RTA with proximal apex strongly reduced ( Figs 228–229 ). Females similar to those of A. hoffmanni spec. nov. and A. annegretae spec. nov. with ratio of epigynal width/length intermediate (8.3/4.3–7/4) ( Figs 231–232 , 245 ) and spherical spermathecae partly covered by internal folds ( Fig. 234 ).

Description. Male (holotype). PL 2.7, PW 1.6, AW 1.1, OL 2.0, OW 1.3. Eye diameters and interdistances: AME 0.13, ALE 0.11, PME 0.18, PLE 0.17, AME–AME 0.05, AME–ALE 0.07, PME–PME 0.11, PME–PLE 0.19, AME–PME 0.04, ALE–PLE 0.10, clypeus AME 0.05, clypeus ALE 0.15. Palp and leg measurements: palp 2.95 (0.9, 0.45, 0.6, -, 1.0), I 7.5 (2.0, 1.0, 2.0, 1.5, 1.0), II 6.5 (1.8, 0.9, 1.7, 1.3, 0.8), III 6.2 (1.7, 0.8, 1.4, 1.5, 0.8), IV 8.8 (2.3, 0.9, 2.1, 2.4, 1.1). Leg formula 4123. Spination of palp and legs: palp 130, 100, 1000; femora I–II p002, d111, III p012, d1111(111), r012, IV p012, d111, r002; patellae I–II 000, III–IV 001; tibiae I–II p010, v22222, III p110, d1110, r111, v222, IV p=d=r111, v222; metatarsi I p010, v222, II p010, r010, v222, III–IV p112, d010, r112, v222. Chelicerae with 3 promarginal, 4 + 1 retromarginal teeth, without denticles. Retromargin of chelicerae close to fang base with 1 bristle. Tarsi and metatarsi without scopula. Claw tufts arising separately, but intermingle distally. Leg claws I with 6, II–IV with 3 secondary teeth.

Palp as in diagnosis ( Figs 227–230 ). Embolus arising in a 7.30-o’clock-position from tegulum, with indistinct membranous seam (visible in prolateral view). Conductor arising in a 12-o’clock-position from tegulum, reaching into retrolateral half. Tegular apophysis situated medially in proximal half of tegulum. RTA with broad base in ventral view, with distal apex blunt and dorso-distad. Patellar apophysis pointed and retrolatero-distad.

Colour ( Figs 238–241 ). Yellowish-brown. Dorsal prosoma with eyes marked with black, faint radial markings and narrow dark margin; fovea distinct, reddish-brown. Chelicerae same colour as dorsal prosoma. Sternum, labium, gnathocoxae, ventral coxae pale yellowish-brown without pattern. Legs yellowish brown, distal segments slightly darker, especially in III–IV. Femora dorsally with some long dark adpressed hairs, laterally with very indistinct dark areas. Dorsal and lateral opisthosoma with patches especially in posterior half, partly fused. Ventral opisthosoma grey without pattern.

Female (paratype). PL 3.0, PW 2.2, AW 1.4, OL 3.8, OW 2.7. Eye diameters and interdistances ( Figs 246– 247 ): AME 0.14, ALE 0.13, PME 0.21, PLE 0.20, AME–AME 0.06, AME–ALE 0.16, PME–PME 0.05, PME– PLE 0.23, AME–PME 0.05, ALE–PLE 0.11, clypeus AME 0.07, clypeus ALE 0.18. Palp and leg measurements: palp 3.35 (1.1, 0.6, 0.7, -, 0.95), I 7.7 (2.2, 1.2, 2.0, 1.5, 0.8), II 7.3 (2.1, 1.1, 1.8, 1.5, 0.8), III 7.05 (1.9, 1.0, 1.5, 1.7, 0.95), IV 9.8 (2.6, 1.1, 2.3, 2.6, 1.2). Leg formula 4123. Spination of palp and legs: palp 130, 100, 1101/1111, 1113; femora I–II p002, d111, III p012, d111, r012, IV p102, d111, r001; patellae I–II 000, III–IV 001; tibiae I–II v22222, III–IV p11, d111, r11, v222; metatarsi I–II v222, III p112, r122, v222, IV p111, d011, r111, v322. Chelicerae with 3 + 2 promarginal, 4 + 3 retromarginal teeth, and with 1 denticle ( Fig. 235 ). Retromargin of chelicerae close to fang base with 1 bristle. Tarsi and metatarsi without scopula. Claw tufts arising separately, but intermingle distally. Palpal claw with 4 secondary teeth ( Fig. 236 ), leg claws I with 6, II with 5, III with 3/4 and IV with 4 secondary teeth ( Fig. 237 ).

Copulatory organ as in diagnosis ( Figs 231–234 , 245 ). Epigynal field with two small patches anterior to epigynal plate (only seen in dissected epigyne). Epigynal plate width/length: 8.3/4.3, 7/4; anterior width/posterior width: 8.3/4.0, 7/3.3; posterior part with distinct lateral margins. Proximal part of lateral teeth posteriorad, their tips medio-posteriorad. Internal duct system with round spermathecae separated from each other by less than their diameter; fertilisation ducts elongately laminar, mediad.

Colour ( Figs 242–244, 246 ). As in male, but slightly darker (reddish-brown). Dorsal and lateral opisthosoma without pattern.

Variation. Females PL 2.3–2.7, OL 3.1–3.9.

Distribution. Known only from the type locality ( Fig. 179 : 5).

Figures

FIGURE 179. Records of Amauropelma spp. in South and Southeast Asia. 1–3 India (1 Shimla, Himachal Pradesh; 2 Dhanolti, Uttar Pradesh, 3 Rongdanggai, Meghalaya). 4–6 Laos (4 Ban Tavan/Nam Ha protected area, Luang Nam Tha; 5 Nong Khiao, Luang Prabang; 6 Nam Khan, Luang Prabang). 7 Pulau Penang, Malaysia.

FIGURES 227–237. Amauropelma jagelkii spec. nov. from Nong Khiao, Luang Prabang, Laos. 227–230 Holotype male, left male palp (227 prolateral; 228 ventral; 229 retrolateral; 230 tegular apophysis distal). 231–237 Paratype female (231–232

FIGURES 238–247. Amauropelma jagelkii spec. nov. from Nong Khiao, Luang Prabang, Laos (238–241 holotype male;