Althepus jiandan Li et Li, 2017

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 : 477

publication ID	https://doi.org/ 10.11646/zootaxa.4350.3.3
publication LSID	lsid:zoobank.org:pub:C5A2FCC7-904B-456B-BD8F-5C9FD3D5FB9F
DOI	https://doi.org/10.5281/zenodo.6049524
persistent identifier	https://treatment.plazi.org/id/5326CD46-FFF6-FFFB-A096-A63DFF74F86E
treatment provided by	Plazi
scientific name	Althepus jiandan Li et Li
status	sp. nov.

Treatment

Althepus jiandan Li et Li sp. nov.

Figs 6–7 View FIGURE 6 View FIGURE 7 , 21–22 View FIGURE 21 View FIGURE 22

Type material. Holotype: Male ( IZCAS), Thailand, Yala Province, Than To District, the evergreen forest in front of the Krasaeng Cave entrance, 06°10.870'N, 101°11.605'E, altitude 155m, 23 October 2013 GoogleMaps . Paratypes: 4 females and 2 males, same data as holotype ( IZCAS) GoogleMaps .

Etymology. The specific name is derived from the Chinese pinyin 'jiǎn dān', which means 'simple', referring to the simple marks on carapace; noun in apposition.

Diagnosis. The species resembles A. xianxi sp. nov. ( Figs 19–20 View FIGURE 19 View FIGURE 20 ) with the male palp, but can be distinguished by the large, forked lamellar structures on the distal part of the conductor ( Figs 6A–D View FIGURE 6 ) as well as by the strongly twisted spermathecae ( Fig. 7E View FIGURE 7 ).

Description. Male (holotype). Total length 3.40; carapace 1.00 length, 1.26 width; abdomen 2.03 length, 1.10 width. Carapace rounded ( Fig. 7G View FIGURE 7 ), yellowish, with three longitudinal brown bands of different width, among them, the middle shortened to triangular band around the eyes. Anterior margin of thoracic region distinctly elevated. Clypeus brown. Cheliceral promargin with two teeth, followed by a lamina, retromargin with two small teeth ( Fig. 21D View FIGURE 21 ). Labium brown, with two light rounded areas basally. Sternum yellow, with two irregular brown lines on each side. Abdomen elongate, with complex patterns of white and dark-brown dorsally and ventrally. Legs brown, femur and tibia annulated with white. Leg measurements: I 23.46 (6.22, 0.40, 6.09, 9.28, 1.47), II 23.29 (6.22, 0.40, 5.77, 9.17, 1.73), III 13.05 (4.23, 0.40, 3.85, 5.13, 1.15), IV 23.93 (6.35, 0.40, 6.22, 9.04, 1.92). Male palp ( Figs 6A–D View FIGURE 6 ): tarsus with three slightly curved, serrated bristles at the top of cymbial protrusion ( Fig. 6C View FIGURE 6 ), one hooked spine with tip directed towards proximally ( Figs 6A, D View FIGURE 6 ), one strong spine and one bristle arising from tubercles; bulb bright yellow, ovate; embolus arising retrolatero-distally from bulb, curved and extremely long distally; conductor arising prolatero-distally from bulb with large and forked structures on the distal part; embolus and conductor widely separated (the distance is almost equal to diameter of bulb).

Female (paratype). Similar to male in coloration and general features ( Figs 7H–I View FIGURE 7 ), but with a smaller body size. Internal genitalia with a pair of strongly twisted and swollen transparent spermathecae ( Fig. 7E View FIGURE 7 ). Measurements: total length 3.00; carapace 0.92 length, 1.09 width; abdomen 1.96 length, 1.33 width. Legs I 25.77 (6.09, 0.32, 6.73, 11.03, 1.60), legs II 15.90 (4.23, 0.32, 4.17, 5.83, 1.35), III 12.50 (3.21, 0.32, 2.88, 3.72, 2.37), IV 16.09 (4.55, 0.32, 4.49, 5.38, 1.35).

Variation. Carapace 1.00–1.19 length, 1.13–1.26 width, tibia I 7.50–9.29 in males. Carapace 0.92–1.00 length, 1.02–1.09 width, tibia I 6.47–6.73 (n=3; leg I lost in other specimen) in females.

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