Six new species of the genus Opopaea Simon, 1891 from Xishuangbanna Rainforest, southwestern China (Araneae: Oonopidae) Author Tong, Yanfeng Author Li, Shuqiang text Zootaxa 2015 3931 1 41 62 journal article 10.11646/zootaxa.3931.1.3 1de76527-acb6-4760-a032-321cc05433d7 1175-5326 288123 C981EB99-53CA-4A18-AE37-272CD47F6954 Opopaea rigidula sp. nov. ( Figures 8–10 , 12 E, F, K, L) Type material. Holotype : male ( IZCAS Ar-25051), China : Yunnan Province, Mengla County, Menglun Town, XTBG , secondary tropical seasonal moist forest ( 21º54.984′N , 101º16.982′E , Alt: 656 m ), searching, 10–20 June 2007 , leg. G. Zheng. Paratypes : 2 females , 4 males ( IZCAS Ar-25051), same data as holotype ; 2 females , 2 males ( IZCAS Ar-25047), same data as holotype , pitfall traps, 1–15 July 2007 ; 2 females , 1 male ( IZCAS Ar-25050), same data as holotype , searching, 19–25 September 2006 ; 1 female , 1 male ( IZCAS Ar-25053), same data as holotype , searching, 19–25 October 2006 ; 1 female , 1 male ( IZCAS Ar-25055), same data as holotype , pitfall traps, 1–15 March 2007 ; 1 female , 1 male ( IZCAS Ar-25046), same data as holotype , searching, 19–25 September 2006 ; 2 females , 1 male ( IZCAS Ar-25056), same data as holotype , searching, 5–12 November 2006 ; 2 females , 2 males ( IZCAS Ar-25059), searching, primary tropical seasonal rainforest ( 21º57.669′N , 101º11.893′E , Alt: 790 m ), 19–25 November 2006 , leg. G. Zheng; 1 female , 1 male ( IZCAS Ar-25049), same data as above, pitfall traps, 16–31 November 2007 ; 1 female , 2 males ( IZCAS Ar-25052), same data as above, searching, 5–12 December 2006 ; 1 female , 1 male ( IZCAS Ar-25058), searching, rubber-tea plantation ( 21º55.551′N , 101º16.923′E , Alt: 561 m ), 4–11 May 2007 , leg. G. Zheng; 3 males ( IZCAS Ar-25057), same data as above, pitfall traps, 1–15 February 2007 ; 2 females , 2 males ( IZCAS Ar-25048), same data as above, pitfall traps, 1–15 June 2007 ; 1 female , 2 males ( IZCAS Ar-25054), same data as above, searching, 19–26 April 2007 . Etymology. The specific name means “rigid” in Latin, and refers to the strongly sclerotized posterior scutal ridge in female genital area; adjective. Diagnosis. The males of the new species are similar to those of O. tumida Tong & Li, 2013 , but can be distinguished by the anterior end of endites with two small, sharply pointed projections ( Fig. 8 H) and the broad distal part of palpal bulb (compare Fig. 10 A, B and Tong & Li 2013b : Fig. 10 A, B); the females can be distinguished from the other congeneric species by the presence of the posterior scutal ridge (psr in Fig. 12 E, K) of genital area. Description. Male ( holotype ). Yellowish brown species with yellow legs. Body length 1.53; carapace 0.61 long, 0.53 wide; abdomen 0.84 long, 0.57 wide. Habitus as in Fig. 8 A–C. Carapace: oval in dorsal view, sides with longitudinal streaks; dorsal area smooth with some hairs at lateral edges; pars cephalica slightly elevated in lateral view ( Fig. 8 E); lateral margin rebordered. Eyes: six, well developed, ALE largest, PLE smallest; posterior eye row straight from above, procurved from front; ALE separated by less than their radius, ALE-PLE separated by less than ALE radius, PME touching throughout most of their length, PLE-PME separated by less than PME radius. Clypeus margin unmodified; clypeus height about 1.5 times ALE diameter ( Fig. 8 G). Sternum longer than wide, uniform, fused to carapace; radial furrows present between coxae I-II, II-III, III-IV, with rows of small pits; surface smooth, without pits, microsculpture only in furrows ( Fig. 8 F). Anterior end of endites with two small, sharply pointed projections ( Fig. 8 F, H). Legs short, thick and spineless. Abdomen: dorsal scutum strongly sclerotized, punctate, covering full length of abdomen. Book lung covers large, ovoid, without setae. Pedicel tube short, ribbed, with small, dorsolateral, triangular extensions, scuto-pedicel region lower than diameter of pedicel, with nearly straight scutal ridges ( Fig. 8 I), scutum not extending far dorsal of pedicel. Sperm pore small, transverse; posterior spiracles connected by groove ( Fig. 8 J); posteriorly directed apodemes present. Palp ( Fig. 10 ): patella 0.29 long, 0.16 wide, attached to femur at 0.47; cymbium completely fused to bulb, no seam visible; bulb distal part broad, with a small apophysis (sap) in the retrolateral distal region. FIGURE 8. Opopaea rigidula sp. nov. , male. A–C. Habitus, dorsal, lateral and ventral views; D–G. Prosoma, dorsal, lateral, ventral and anterior views; H. Endites (arrows show the two projections); I, J. Abdomen, anterior and ventral views. Abbreviations: boc = booklung covers; dte = dorsolateral, triangular extensions; sr = scutal ridge. Scales: 0.2 mm. FIGURE 9. Opopaea rigidula sp. nov. , female. A–C. Habitus, dorsal, lateral and ventral views; D–G. Prosoma, dorsal, lateral, ventral and anterior views; H, I. Abdomen, anterior and ventral views. Scales: 0.2 mm. FIGURE 10. Opopaea rigidula sp. nov. , male. A, C. Palp, prolateral views; B, E. Same, retrolateral views; D. Distal part of palpal bulb, dorsal view. Abbreviations: sap = small apophysis. Scales: A, B, C, E = 0.1 mm; D = 0.05 mm. Female. As in male except as noted. Habitus as in Fig. 9 A–C. Body length 1.72; carapace 0.68 long, 0.53 wide; abdomen 1.05 long, 0.65 wide. Endites without projections ( Fig. 9 F). Genitalia ( Fig. 12 E, F, K, L): in ventral view anterior scutal ridge (asr) of postgynum with small median knob (smk), between the asr and the groove connecting spiracles with a posterior scutal ridge (psr); paddle-like sclerite (pls) with thin straight arms bent at end; nail-like process (nlp) well separated; globular appendix (ga) small. Distribution. Known only from the type locality.