Althepus duan Li et Li

Liu, Chang, Li, Fengyuan, Wongprom, Prasit, Zheng, Guo & Li, Shuqiang, 2017, Eleven new species of the spider genus Althepus Thorell, 1898 (Araneae, Ochyroceratidae) from Thailand, Zootaxa 4350 (3), pp. 469-499: 470-473

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Althepus duan Li et Li

sp. nov.

Althepus duan Li et Li  sp. nov.

Figs 1–2View FIGURE 1View FIGURE 2, 21–22View FIGURE 21View FIGURE 22

Type material. Holotype: Male ( IZCAS), Thailand, Kanchanaburi Province, Sai Yok District, Wang Krachae Subdistrict , a cave without name, 14°12.127'N, 99°01.195'E, altitude 438m, 0 1 November 2014GoogleMaps  . Paratypes: 1 female and 1 male, same data as holotype ( IZCAS)GoogleMaps  .

Etymology. The specific name is derived from the Chinese pinyin 'duǎn', which means 'short', referring to the short transparent copulatory ducts; noun in apposition.

Diagnosis. Males resembles to those of Althepus suhartoi Deeleman-Reinhold, 1985  in having similarly shaped conductor and embolus in male palp but can be distinguished by the slice-shaped distal part of the conductor and long and sharpen embolus ( Figs 1A –DView FIGURE 1). Females can be distinguished from those of A. suhartoi  by the unswollen spermathecae ( Fig. 2EView FIGURE 2; swollen spermathecae in A. suhartoi  ).

Description. Male (holotype). Total length 4.16; carapace 1.38 length, 1.45 width; abdomen 2.44 length, 1.43 width. Carapace rounded, yellow, with three longitudinal brown bands of different width, among them, the middle two time wider than the lateral ones ( Fig. 2GView FIGURE 2). Anterior margin of thoracic region distinctly elevated. Clypeus brown. Cheliceral promargin with two teeth, followed by a lamina, retromargin with two small teeth ( Fig. 21AView FIGURE 21). Labium brown, with two light rounded areas basally. Sternum brown. Abdomen elongate, with complex patterns of white and dark-brown dorsally and ventrally. Legs brown, tibia annulated with white. Leg measurements: I missing, II 26.99 (6.86, 0.53, 6.79, 10.58, 2.23), III 17.51 (5.06, 0.53, 4.49, 6.03, 1.40), IV 24.80 (6.99, 0.53, 7.05, 8.33, 1.90). Male palp ( Figs 1A –DView FIGURE 1): tarsus with three slightly curved, serrated bristles at the top of cymbial protrusion ( Fig. 1AView FIGURE 1), one twisted spine with tip directed distally ( Fig. 1AView FIGURE 1); bulb yellow, ovate; embolus arising retrolaterally from bulb, oblique distally; conductor arising distally from bulb, sigmoid distally; embolus and conductor widely separated (the distance is less than two third of diameter of bulb).

Female (paratype). Similar to male in coloration and general features ( Figs 2H –IView FIGURE 2), but with a smaller body size. Internal genitalia with a pair of unswollen spermathecae ( Fig. 2EView FIGURE 2). Measurements: total length 3.95; carapace 1.29 length, 1.33 width; abdomen 2.56 length, 1.34 width. Legs I 41.51 (9.74, 0.55, 10.12, 17.63, 3.47), legs II 23.07 (5.96,0.55, 6.03, 8.65, 1.88), III 16.57 (4.25, 0.55, 5.45, 5.13, 1.19), IV 21.84 (6.40, 0.55, 5.96, 7.05, 1.88).

Variation. Carapace: males 1.38–1.68 long, 1.45–1.88 wide, tibia I 6.79–7.18.

Distribution. Known only from the type locality ( Fig. 22View FIGURE 22).


Institute of Zoology, Chinese Academy of Sciences