Patu spinathoraxi, Lin, Yucheng & Li, Shuqiang, 2009

Lin, Yucheng & Li, Shuqiang, 2009, First described Patu spiders (Araneae, Symphytognathidae) from Asia, Zootaxa 2154, pp. 47-68 : 60-67

publication ID	https://doi.org/ 10.5281/zenodo.188801
DOI	https://doi.org/10.5281/zenodo.6224784
persistent identifier	https://treatment.plazi.org/id/1B0887D9-FF9E-FFEF-FF47-F90DFC2D6860
treatment provided by	Plazi
scientific name	Patu spinathoraxi
status	sp. nov.

Treatment

Patu spinathoraxi View in CoL spec. nov.

Figs. 14–18 View FIGURE 14 View FIGURE 15 View FIGURE 16 View FIGURE 17

Type material. Holotype male, 15 males and 19 females paratypes from Rubber Plantation (21°54´N, 101°16´E; Alt.: 569 m) near Menglun Nature Reserve, Menglun Town, Mengla County, Yunnan, China, 1–15 May 2007, G. Zheng leg. ( IZCAS);, 2 males and 2 females paratypes from Rubber-Tea Plantation (21°55´N, 101°16´E; Alt.: 572 m), Menglun Nature Reserve, Menglun Town, Mengla County, Yunnan Province, China, 5–12 January 2007, G. Zheng leg. ( IZCAS); 3 females paratypes from Secondary seasonal tropical rainforest (21°54´N, 101°17´E; Alt.: 612 m), Menglun Nature Reserve, Menglun Town, Mengla County, Yunnan Province, China, 10 August 2007, G. Zheng leg. ( IZCAS).

Etymology. The species epithet is derived from the Latin spinosus (thorny), in reference to the densely modified cuticular thorns on the carapace in both sexes.

Diagnosis. Patu spinathoraxi is similar to Patu woodwardi Forster, 1959 from New Guinea, but it can be easily distinguished by the finely modified carapace and the presence of mesally split dorsal scutum in male.

Description. Holotype male. Total length 0.63. Carapace 0.32 long, 0.31 wide. Clypeus 0.11 high. Sternum 0.21 long, 0.19 wide. Abdomen 0.40 long, 0.38 wide. Carapace nearly round, brown, covered with modified thorns and pits on surface. Cephalic pars elevated, with three pair of long setae. Six eyes in three diads, subequal in size, lateral eyes in contact, ocular base black. Chelicerae fused at middle, covered long setae on anterior surface, with two adnate teeth, cheliceral fang with tiny denticles. Sternum brown, plump, fused to labium, with pits on surface. Legs yellow, covered with setae and bristles, a long dorsal spine on patella distally; two long dorsal spines on tibia I and II, one on tibia III and IV; tibia II with one large ventral spurs, three trichobothria on tibia and one on metatarsus respectively. Leg measurements: I 0.92 (0.28, 0.11, 0.22, 0.14, 0.17); II 0.78 (0.23, 0.11, 0.17, 0.11, 0.16); III 0.66 (0.19, 0.09, 0.13, 0.10, 0.15); IV 0.78 (0.24, 0.10, 0.18, 0.11, 0.15). Leg formula: I-II-IV-III. Abdomen round in dorsal view, bears disperse long setae, with paired sclerotized plate on posterolaterals, posteriorly expanded beyond spinnerets. Spinnerets closed in an annular sclerotized plate, anterior spinnerets larger than posteriors, median spinnerets smallest, hardly visible; colulus absent.

Palp relatively large. Femur and patella without process. Tibia bears four retrolaterally distal short setae. Cymbium with a trigonal apophysis and five short setae on prolaterally distal-margin. Tegulum present, nearly rectangular. Embolus long, highly curved, strongly sclerotized. Conductor membranous. Most of ejaculatory duct embedded in the bulb. Terminal apophysis fingerlike, smooth and sclerotized. Embolic base starting at underside of tegulum ( Figs. 15 View FIGURE 15 A, B; 16 A–C).

Female. Total length 0.75. Carapace 0.33 long, 0.33 wide. Clypeus 0.09 high. Sternum 0.21 long, 0.21 wide. Abdomen 0.49 long, 0.48 wide. Somatic coloration and modification same as in male. Palp absent. Clypeus lower than in male. Leg measurements: I 0.99 (0.31, 0.12, 0.22, 0.15, 0.19); II 0.87 (0.25, 0.11, 0.20, 0.13, 0.18); III 0.71 (0.21, 0.09, 0.15, 0.11, 0.15); IV 0.86 (0.26, 0.11, 0.20, 0.13, 0.16). Leg formula: I-II-IV- III. Abdomen globose, covered with long setae, without sclerotized plate. Posteriorly expanded beyond spinnerets. A pair of spiracles located at posterolateral margin of epigynal plate. Colulus absent.

Epigynal surface smooth, bears three pairs of long setae, with an unconspicuous projection on the middle of posterior margin. Vulva relatively complex. Spermathecae widely spaced, globose, strongly sclerotized. Paired copulatory openings adjacent, located at basal scape; copulatory ducts long, originating dorsally from spermathecae, coiling around the spermathecae into a ring before curving down. Fertilization ducts short, straight, deriving at posterolateral corners of spermathecae, ending at bilateral corners of scape ( Fig. 17 View FIGURE 17 A, B).

Distribution. Known only from the type locality (Yunnan) ( Fig. 18).