New cave-dwelling armored spiders (Araneae, Tetrablemmidae) from Southwest China Author Lin, Yucheng Author Li, Shuqiang text ZooKeys 2014 388 35 67 http://dx.doi.org/10.3897/zookeys.388.5735 journal article http://dx.doi.org/10.3897/zookeys.388.5735 1313-2970-388-35 9EEB8A811E5846D79A161A2271B67709 9EEB8A811E5846D79A161A2271B67709 Tetrablemma menglaensis sp. n. Figs 10-12, 18 C-D , 21, 22 Material. Holotype ♂, paratypes 2♀ (SCUM), CHINA, Yunnan: Mengla County, Mengyuan Town, Chengzi Village, Yeniudong Scenery Spot, Yeniu 2# Cave, 21°43.208'N , 101°23.294'E , elevation ca. 760 m, 16 August 2011, Yucheng Lin and Guo Zheng leg. Etymology. The specific name refers to the type locality; adjective. Diagnosis. The male of this new species is similar to Tetrablemma namkhan Lin & Li, 2012 (see Lin and Li 2012 : figs 4 A-G , 5 A-C , 6 A-C ), Tetrablemma loebli Bourne, 1980 (see Lehtinen 1981 : figs 219, 221, 223-224), Tetrablemma marawula Lehtinen, 1981 (see Lehtinen 1981 : figs 255, 266), and Tetrablemma brevidens Tong & Li, 2008 (see Tong and Li 2008 : figs 5A, C, F-I ), but can be distinguished by a forked cephalic tubercle (Figs 10E, G), a crooked cheliceral horn (Figs 10 A-B , E), the swollen palpal tibia (Figs 11 B-C , 18C), the course of sperm duct, and the long-tongue shaped embolus (Figs 11A, 18D). The female is similar to Tetrablemma nandan Lin & Li, 2010 (see Lin and Li 2010 : figs 46-49) and Tetrablemma marawula Lehtinen, 1981 (see Lehtinen 1981 : figs 256, 283), but can be recognized by the narrow postepigastral scutum (Figs 12 A-B ), the long S-shaped inner vulval plate (Figs 12 C-D , 21 A-B ), the absence of vulval dorsal plate, and the wide central process (Figs 12D, 21B). Description. Male (holotype). Coloration: body reddish-brown; legs yellowish-brown. Measurements: total length 1.18; carapace 0.54 long, 0.46 wide, 0.36 high; abdomen 0.98 long, 0.63 wide, 0.52 high; clypeus 0.27 high. Sternum 0.31 long, 0.34 wide. Length of legs: I 1.27 (0.38, 0.14, 0.30, 0.21, 0.23); II 1.21 (0.38, 0.13, 0.29, 0.21, 0.22); III 1.11 (0.34, 0.11, 0.25, 0.20, 0.21); IV 1.40 (0.43, 0.11, 0.36, 0.26, 0.25). Carapace (Figs 10A, E and G) completely reticulate, margin rugose; ocular area with a short, bifurcate tubercle; clypeal area distinctly convex, margin rounded; cheli ceral horn narrow, medially curved in dorsal view; sternum centrally reticulated, marginally sclerotized and rugose. Legs: cuticle sculptured; femur I slightly swollen; all tibiae with 2 trichobothria, and one on metatarsi I-IV ; metatarsus I with two small lateral tubercles (Figs 11D, E). Figure 10. Tetrablemma menglaensis sp. n., male holotype ( A-B , E, G) and female paratype ( C-D , F, H). A-F Habitus G, H Prosoma. A, C dorsal view B, D ventral view E, F lateral view G, H anterior view. Abdomen (Figs 10 A-B , E): dorsal scutum short, oval, finely granulated; ventral scuta reticulated and striated; lateral scutum I short; postepigastral scutum short, narrower than preanal scutum (Fig. 10B). Palp (Figs 11 A-C ; 18 C-D ): femur slightly swollen, ventrally granulated; patella short, approx. as 1/2 long as femur; tibia smooth, swollen, approx. 2 times as wide as patella; bulb pyriform, smooth; embolus long, bent, strongly sclerotized; sperm duct visible through bulbal integument (Figs 11 A-C ; 18C, D). Figure 11. Tetrablemma menglaensis sp. n., male holotype. A Embolus and sperm duct B, C Left palp D Left leg I E Left metatarsus I. A, B prolateral view C, D retrolateral view E anterior view. Female (paratype). Coloration and modifications as in male, but cephalic tubercle and cheliceral horn absent. Measurements: total length 1.27; carapace 0.58 long, 0.45 wide, 0.28 high; clypeus 0.19 high; sternum 0.32 long, 0.34 wide; abdomen 0.91 long, 0.68 wide, 0.50 high. Length of legs: I 1.29 (0.41, 0.13, 0.31, 0.21, 0.23); II 1.21 (0.38, 0.13, 0.29, 0.21, 0.22); III 1.12 (0.34, 0.12, 0.25, 0.20, 0.21); IV 1.47 (0.46, 0.13, 0.38, 0.27, 0.24). Carapace (Figs 10C, F and H): reticulation as in male; clypeal area nearly vertical anteriorly; cephalic part flat; cheliceral frontal surface with a small basal tubercle; sternum as in male. Legs: chaetotaxy and number of trichobothria as in male. Abdomen (Figs 10 C-D , F; 12A): lateral scutum I anteriorly short, not extending beyond the posterior rim of operculum; postgenital plate straight, narrower than preanal scutum; preanal scutum wider than long, anterior margin rugose (Fig. 21A), covered with serrated setae (Fig. 12B). Figure 12. Tetrablemma menglaensis sp. n., female paratype. A Opisthosoma B Genital area (untreated) C, D Cleared vulva (KOH-treated). A, B ventral view C dorsal view D dorsal-lateral view. Abbrs.: CP central process; EF epigynal fold; EP epigynal pit; IVP inner vulval plate; LH lateral horn; PA preanal plate; POG postgenital plate; SR seminal receptaculum; VD vulval duct; VS vulval stem. Genitalia (Figs 12 B-D ; 21 A-B ): epigynal folds laterally narrow, medially wide (Fig. 12B); epigynal pit narrow, indistinct, separated with vulval stem and lateral horns; vulval stem strongly sclerotized (Figs 12C; 21A); spermathecae rugose, membranous; lateral horns wide, strong, supporting the base of vulval ducts of seminal receptacle; inner vulval plate S-shaped, very long, at least 2 times longer than central process (Figs 12D; 21B); central process wide, basally contracted (Fig. 21B); vulval duct narrow, connected with lateral horn and spermathecae. Distribution. Known only from the type locality (Fig. 22).