Psiloderces bangkiraiensis Li & Chang, 2020

Chang, Wan-Jin & Li, Shuqiang, 2020, Fourteen new species of the spider genus Psiloderces Simon, 1892 from Southeast Asia (Araneae, Psilodercidae), ZooKeys 902, pp. 61-105 : 61

publication ID	https://dx.doi.org/10.3897/zookeys.902.38967
publication LSID	lsid:zoobank.org:pub:2DB04880-0FB8-48BF-AAF3-5EC2176F8D6E
persistent identifier	https://treatment.plazi.org/id/A55D77D3-F71B-46B8-ADD8-21259DCDF0EE
taxon LSID	lsid:zoobank.org:act:A55D77D3-F71B-46B8-ADD8-21259DCDF0EE
treatment provided by	ZooKeys by Pensoft
scientific name	Psiloderces bangkiraiensis Li & Chang
status	sp. nov.

Treatment

Psiloderces bangkiraiensis Li & Chang sp. nov. Figs 20 View Figure 20 , 21 View Figure 21 , 28A View Figure 28 , 30 View Figure 30

Types.

Holotype: ♂ (IZCAS), Indonesia, East Kalimantan, Kutai Kaetanegara, Bukit Bangkirai, 1°1.2247'S, 116°51.9580'E, 92 m, 18.VIII.2014, Y. Li Paratype: 1♀ (IZCAS), same data as holotype.

Etymology.

The species name is an adjective referring to the type locality.

Diagnosis.

Males of P. bangkiraiensis sp. nov. can be distinguished from all other species of the genus by the relatively slender and elongated bulb bearing a distinct pointed bulge posteriorly (vs. bulb not elongated and slender), the angular tip of the cymbial protrusion (vs. tip of cymbial protrusion rounded), the tibia of the male palp swollen anteriorly (vs. tibia not swollen); females can be distinguished by the curled spermathecae (Fig. 20A View Figure 20 ).

Description.

Male (Holotype). Total length 1.49; carapace 0.47 long, 0.60 wide; abdomen 1.02 long, 0.50 wide. Carapace round and brown, with trident dark brown stripes medially and dark brown bands laterally (Fig. 20C View Figure 20 ). Chelicerae brown (Fig. 28A View Figure 28 ). Clypeus slanting, dark brown. Endites dark brown, light brown basally. Labium dark brown, delimiting pair of light brown circular dots. Sternum dark brown. Abdomen elongated, dorsum with indistinct brownish stripes posteriorly, with pair of circular dark brown patches antero-ventrally followed by elliptical light brown patch, posterior dark brown pattern delimiting light brown dotted vertical lines laterally. Legs uniformly brown; measurements: I 7.88 (1.88, 0.16, 2.50, 2.34, 1.00), II 5.79 (1.63, 0.16, 1.75, 1.50, 0.75), III 4.41 (1.20, 0.16, 1.25, 1.17, 0.63), IV 6.71 (1.88, 0.20, 2.00, 1.75, 0.88). Palp (Fig. 21A-D View Figure 21 ): femur slender, 4 times longer than patella; patella not swollen; tibia swollen anteriorly, 1.5 times shorter and 2 times wider than femur; cymbium 2.5 times shorter and 2 times wider than femur, protrusion darkens distally, tip angled; bulb light brown, lanceolate with laminar apophysis and embolus arising distally; laminar apophysis attached to embolus anteriorly and basally; embolus directed apically away from tegulum, thin and slender, bulge directed toward the base of bulb (Fig. 21B View Figure 21 ).

Female (Paratype). General features and coloration similar to those of male (Fig. 20D, E View Figure 20 ). Measurements: total length 1.38; carapace 0.44 long, 0.55 wide; abdomen 0.94 long, 0.86 wide. Leg measurements: I missing, II missing, III 3.62 (1.00, 0.13, 1.00, 0.94, 0.55), IV 5.51 (1.40, 0.13, 1.72, 1.48, 0.78). Endogyne (Fig. 20A View Figure 20 ): curled spermathecae connected with bent ducts, equally wide as long (Fig. 20A View Figure 20 ).

Distribution.

Known only from the type locality (Fig. 30 View Figure 30 ).