Guineta gigachela, Lin & Li, 2010

Lin, Yucheng & Li, Shuqiang, 2010, Leptonetid spiders from caves of the Yunnan-Guizhou Plateau, China (Araneae: Leptonetidae) 2587, Zootaxa 2587 (1), pp. 1-93 : 6-10

publication ID	https://doi.org/ 10.11646/zootaxa.2587.1.1
persistent identifier	https://treatment.plazi.org/id/A76E6115-FF87-FFCF-FF49-8517A5CFFE56
treatment provided by	Felipe
scientific name	Guineta gigachela
status	sp. nov.

Treatment

Guineta gigachela sp. nov.

Figs 1–3 View FIGURE 1 View FIGURE 2 View FIGURE 3 , 61 View FIGURE 61

Type material: Holotype: male ( IZCAS), Qingzi Cave (Alt.: 970 m; T.: 15 ºC; H.: 90%), Mianxi Village , Sankeshu Town, Kaili City [26°30.850´N, 107°59.648´E, Guizhou, China], 26 May 2007, Y.C. Lin and J. Liu leg. GoogleMaps Paratypes: 2 males and 12 females, same data as holotype ( IZCAS) GoogleMaps .

Etymology. The specific epithet is derived from the Greek words “ giga- ”(= gigantic, giant) and “ chela” (= chelicera), in reference to the extremely strong chelicerae in the male.

Diagnosis. G. gigachela sp. nov. can be easily recognized by the extremely strong chelicerae in the male ( Fig. 2D, E View FIGURE 2 ), the distinctly long pedipalpus, and tibia subequal to tarsus in the pedipalpus ( Fig. 1A, B View FIGURE 1 ). Both sexes with 9 promarginal and 10 retromargin teeth ( Fig. 2C, D View FIGURE 2 ).

Description. Holotype male. Total length 1.90. Prosoma 0.98 long, 0.80 wide. Sternum 0.62 long, 0.56 wide. Opisthosoma 1.04 long, 0.74 wide. Prosoma yellow and pear-shaped, with two setae at anterolateral area of PME. Thoracic median groove dark-brown, needle-shaped. Cervical groove and radial furrows indistinct. Clypeus 0.18 high, slightly sloped anteriorly. Six eyes, ALE and PLE black bases, PME darkish base ( Fig. 2A View FIGURE 2 ). Eye sizes: ALE 0.09, PLE 0.09, PME 0.05. ALE-ALE 0.01, ALE-PME 0.12, PLE-PLE 0.09, PLE-PME 0.04, AER 0.16, PER 0.21. Major axes of PLE convergent behind. Chelicerae long and strong, brown yellow, fang furrow with 9 promarginal (the first tooth especially sturdy) and 10 retromarginal teeth ( Fig. 2D View FIGURE 2 ). Endites brown yellow. Labium yellow and plump, fused to sternum. Sternum pale yellow, peltate. Legs yellow. Leg measurements: I 8.68 (2.35, 0.30, 2.73, 2.05, 1.25); II 6.48 (1.80, 0.30, 1.90, 1.48, 1.00); III 5.95 (1.55, 0.30, 1.90, 1.30, 0.90); IV 6.98 (1.95, 0.30, 2.03, 1.70, 1.00). Leg formula: I-IV-II-III. Femur I with one dorsal and one ventral spine. Patellae with a dorsal spine distally and tibiae with two dorsal spines respectively. Tibia II and III bear a ventral serrated hairs-comb distally respectively. Opisthosoma pale yellow, ovoid, covered with short hairs, lacking pigment.

Pedipalpus particularly long, subequal to 2.2 times prosoma length; pedipalpal tibia and tarsus subequal in length; femur slightly longer than tibia and tarsus, with three short ventral spines; patella with one dorsal spine distally; tibia with eight long spurs ventrally but lacking trichobothria; tarsus with a median apophysis ventrally, a long seta apically; tarsus with one prolateral and one apical strong seta ( Fig. 1A, B View FIGURE 1 ); bulb ovoid, with smooth surface, embolus and conductor small, median apophysis absent ( Fig. 1C View FIGURE 1 ).

Female. Somatic coloration same as in male. Larger body size and slightly shorter legs. Total length 2.18. Prosoma 0.96 long, 0.88 wide. Sternum 0.62 long, 0.50 wide. Opisthosoma 1.28 long, 1.02 wide. Clypeus 0.17 high. Six eyes. ALE and PLE ovoid with distinctly black bases; PME nearly round. Eye sizes: ALE 0.07, PLE 0.06, PME 0.05; ALE-ALE 0.01, ALE-PME 0.10, PLE-PLE 0.09, PLE-PME 0.04; AER 0.15, PER 0.18. Chelicerae brown yellow, with 9 promarginal and 10 retromarginal teeth. Endites and labium pale brown. Sternum and legs yellow. Leg measurements: I 7.85 (2.10, 0.35, 2.40, 1.80, 1.20); II 6.03 (1.65, 0.33, 1.75, 1.35, 0.95); III 4.96 (1.43, 0.30, 1.25, 1.18, 0.80); IV 6.68 (1.90, 0.33, 1.90, 1.55, 1.00). Leg formula: I-IV-II- III. Spine and chaetotaxy of legs same as in male.

Genital area covered with long plumose hairs ( Fig. 3A View FIGURE 3 ). Internal genitalia with a pair of spiral spermathecae and sperm ducts, atrium visible, broad, modified with short hairs at anterior margin ( Fig. 3B View FIGURE 3 ).

Distribution. Known only from type locality.