Singaporemma wulongensis
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Ordo: Araneae
Familia: Tetrablemmidae
Genus: Singaporemma
Name
Singaporemma wulongensis Lin & Li, 2014 sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Material
Holotype ♂, paratypes 8♂ and 20♀ (SCUM), CHINA, Chongqing: Wulong County, Tudi Town, Tiansheng Village, Xiaodong Cave, 29°31.853'N, 107°50.817'E, elevation ca. 1050 m, 17 October 2010, Liang Dou and Yucheng Lin leg.
Etymology
The specific name refers to the type locality; adjective.
Diagnosis
This new species is similar to Singaporemma bifurcata Lin & Li, 2010 (see Lin & Li 2010: figs 29–37) but the male can be distinguished by the base of embolus (Figs 8A–C, 17A–C), the flexible embolic end (Figs 8D–F, 17D–E), and the long oval palpal bulb (Figs 8A–B, 17A–B). The females are distinguished by the “Ω”-shaped inner vulval plate, and the long central process (Figs 9C, 20B).
Description
Male (holotype). Coloration: body reddish-brown; legs yellowish-brown.
Measurements: total length 1.21; carapace 0.53 long, 0.45 wide, 0.44 high; abdomen 0.79 long, 0.60 wide, 0.54 high; clypeus 0.18 high; sternum 0.32 long, 0.32 wide. Length of legs: I 1.29 (0.41, 0.13, 0.30, 0.21, 0.23); II 1.16 (0.36, 0.13, 0.27, 0.20, 0.21); III 1.07 (0.32, 0.13, 0.23, 0.19, 0.21); IV 1.43 (0.43, 0.13, 0.36, 0.25, 0.26).
Carapace (Figs 7A–B, G and E) finely reticulated, margin rugose; eyes with black base; cephalic part flat, covered with long setae; clypeus sharply sloping anteriorly; sternum reticulated, marginally rugose. Legs: cuticle striated; all tibiae with 3 trichobothria and all metatarsi with a trichobothrium. Abdomen (Figs 7A–B, E): dorsal scutum long, oval, covered with long setae, margin reticulated, center granulated; ventral scutum reticulated, margin rugose; lateral scutum I short, perigenital plate broad.
Palp (Figs 8A–F; 17A–E): femoral cuticle granular, striated, approx. 3 times as long as patella; patella proximally narrow, distally wide; tibia short, swollen, 1.6 times as wide as femur; bulb egg-shaped, surface smooth; embolus long, strongly sclerotized, starting from subproximal-ventral 1/3 position of bulbous surface, and curved downwards (Figs 8C; 17A, C); embolic tip flexuous, forked (Figs 8D–F; 17D–E). Female (paratype). Coloration: body slightly lighter than in male; legs yellowish-brown.
Measurement: total length 1.23; carapace 0.54 long, 0.43 wide, 0.41 high; abdomen 0.80 long, 0.63 wide, 0.59 high; clypeus 0.17 high; sternum 0.30 long, 0.31 wide. Length of legs: I 1.21 (0.38, 0.13, 0.29, 0.20, 0.21); II 1.11 (0.34, 0.13, 0.25, 0.18, 0.21); III 1.03 (0.30, 0.12, 0.22, 0.18, 0.21); IV 1.38 (0.42, 0.13, 0.34, 0.23, 0.25).
Carapace (Figs 7C–D, F and H) as in male, except for clypeal area smooth. Legs: chaetotaxy as in male.
Abdomen (Figs 7C–D, F; 9A): as in male, except for lighter coloration; lateral scutum I anteriorly short, not extending beyond the posterior rim of operculum; perigenital plate broad; postepigastral scutum curved, its posterior margin overlapped with anterior margin of preanal scutum; preanal scutum regularly rectangular, width equal to 2 times length, surface covered with serrated setae. Genitalia (Figs 9B–C; 20B): genital area smooth; epigynal folds absent, genital basal margin sclerotized (Fig. 9B); epigynal pit small, oval, transverse; vulval stem absent; lateral horns contracted, supporting the base of vulval ducts; inner vulval plate “Ω”-shaped, slightly sclerotized, shorter and narrower than central process (Figs 9C; 20B); central process large, translucent; vulval duct wide; spermathecae large, rugose. (Fig. 20B).
Variation
Total length from 1.14 to 1.25 in males (n = 9) and from 1.16 to 1.30 in females (n = 20).
Distribution
Known only from the type locality (Fig. 22).
Original Description
- Lin, Y; Li, S; 2014: New cave-dwelling armored spiders (Araneae, Tetrablemmidae) from Southwest China ZooKeys, 388: 35-67. doi
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