Ischnothyreus qidaoban Tong & Li sp. nov. Figures 10, 11, 12, 20J-L, 22G, H, 23G, H

Type material.

Holotype ♂: China, Yunnan, Mengla City, Menglun Town, Xishuangbanna Natural Reserve, 55 Km, monsoon forest; 21°57.531'N, 101°11.961'E; 751 m; 13.VI.2013; Q. Zhao and Z. Chen leg. (SYNU-405). Paratypes. 1♂5♀: same data as for holotype (SYNU-406-411); 1♂1♀: Xiaolongha, Xishuangbanna Biodiversity Conservation Corridor, Qidaoban, valley forest; 21°24.808'N, 101°37.874'E; 711 m; 18.VI.2013; Q. Zhao and Z. Chen leg. (SYNU-412-413).

Diagnosis.

The new species is similar to I. auritus Tong & Li, 2012 in the long dorsal scutum of the abdomen and the helmet-shaped sclerotized process of the male cheliceral fang, but can be distinguished by the broad mushroom-like projection (Fig. 20J-L) of the palp (vs the ear-shaped apophysis in I. auritus; Tong 2013: fig. 43A, B) and the central oval shaped depression (Figs 12H, 23G) of epigastric area (vs without external features in I. auritus; Tong 2013: fig. 43C).

Description.

Male (holotype). Body: habitus as in Fig. 10A-C; body length 1.58. Carapace: 0.84 long, 0.69 wide; dark brown, with egg-shaped patches behind eyes, surface of elevated portion of pars cephalica finely reticulate, sides strongly reticulate, lateral margin straight, smooth (Fig. 10D, E). Clypeus: height about equal to ALE diameter (Fig. 10G). Eyes: (Fig. 10D, G). Sternum: pale orange (Fig. 10F). Mouthparts: chelicerae, endites and labium brown; chelicerae straight, base of fangs with helmet-shaped sclerotized process, fang groove with a few small denticles (Figs 10H-J, 22G, H); anteromedian tip of endites with one strong, tooth-like projection (Fig. 10F). Abdomen: 0.74 long, 0.46 wide; dorsal scutum well sclerotized, pale orange, covering whole abdomen width and abdomen length, fused to epigastric scutum; epigastric and postgastric scutum well sclerotized, yellow, fused, postgastric scutum covering about 5/6 of the abdomen length (Fig. 10A-C). Legs: yellow, femur I with 2 prolateral spines, tibia I with 4 pairs, metatarsus I with 2 pairs of long ventral spines. Leg II spination similar to leg I except femur with only 1 prolateral spine. Legs III and IV spineless. Palp: trochanter with ventral projection, cymbium brown; bulb with one small ventral protuberance, distal end of bulb elongated, with one broad mushroom-like projection, retrolateral lobe narrow (Figs 11, 20J-L).

Female (paratype, SYNU-407). Same as male except as noted. Body: habitus as in Fig. 12A-C; body length 1.64. Carapace: 0.77 long, 0.67 wide. Mouthparts: chelicerae and endites unmodified. Abdomen: 0.88 long, 0.65 wide; dorsal scutum covering 5/6 of the abdomen length and about 5/6 of the abdomen width. Epigastric area: postgastric scutum with central oval-shaped depression (Fig. 12C, H). Endogyne: from the middle of the slightly thickened margin of the postgastric scutum runs a dark, simple winding tube posteriorly (Fig. 23G, H).

Etymology.

The specific name is a noun in apposition taken from the type locality.

Distribution.

Known only from the localities of the type series.