Psiloderces gawanaensis 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/15281939-437A-4A72-B5E3-ABF4BA47B4A7
taxon LSID	lsid:zoobank.org:act:15281939-437A-4A72-B5E3-ABF4BA47B4A7
treatment provided by	ZooKeys by Pensoft
scientific name	Psiloderces gawanaensis Li & Chang
status	sp. nov.

Treatment

Psiloderces gawanaensis Li & Chang sp. nov. Figs 3 View Figure 3 , 4 View Figure 4 , 28F View Figure 28 , 30 View Figure 30

Types.

Holotype: ♂ (IZCAS), Philippines, Luzon Island, Mountain Province, Bontoc Town, road to Gawana Town, 17°3.6396'N, 121°3.0402'E, 1674 m, 26.V.2015, F. Ballarin & 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. gawanaensis sp. nov. can be distinguished from congeners by the human heart-shaped bulb (inverted pyriform) (Fig. 4B View Figure 4 ) bearing a threadlike embolus, the presence of 4 distinct bristles on the cymbial protrusion, and the clypeal projection bearing a few setae (Fig. 4C, D View Figure 4 ) (vs. absence or less than 4 bristles on cymbial protrusion); females can be differentiated from congeners by the widely spaced, horseshoe-shaped spermathecae (Fig. 3A View Figure 3 ).

Description.

Male (Holotype). Total length 1.54; carapace 0.60 long, 0.63 wide; abdomen 0.94 long, 0.56 wide. Carapace wider than long, brown, with 3 longitudinal dark brown bands, median band half length of carapace, median band two times wider than lateral band (Fig. 3D View Figure 3 ). Chelicerae pale brown (Fig. 28F View Figure 28 ). Clypeus dark brown, with long and slightly bent medial projection, bearing few setae apically (Fig. 3C, D View Figure 3 ). Endites dark brown. Labium dark brown delimiting pair of light brown circular spots. Sternum dark brown, delimiting light brown band medially. Abdomen elongated, dorsum with brown stripes, antero-ventrally brown with elliptical patch, posterior part with indistinct brown pattern. Legs uniformly brown; measurements: I 5.21 (1.33, 0.25, 1.63, 1.20, 0.80), II 4.03 (1.09, 0.20, 1.25, 0.94, 0.55), III 3.49 (0.94, 0.20, 0.94, 0.86, 0.55), IV 4.88 (1.25, 0.25, 1.38, 1.25, 0.75). Palp (Fig. 4A-D View Figure 4 ): femur slender, 4 times longer than patella; patella not swollen; tibia 3 times shorter than femur; cymbium purplish distally, 2 times shorter than wide, and 2 times wider than femur, protrusion with 4 distinct bristles basally and anteriorly; bulb light brown, inverted pyriform with threadlike embolus arising distally (Fig. 4B View Figure 4 ).

Female (Paratype). General features and coloration similar to those of male (Fig. 3E, F View Figure 3 ). Measurements: total length 1.64; carapace 0.70 long, 0.60 wide; abdomen 0.94 long, 1.20 wide. Leg measurements: I 5.23 (1.25, 0.25, 1.60, 1.25, 0.88), II 4.30 (1.10, 0.20, 1.30, 1.00, 0.70), III missing, IV 5.24 (1.30, 0.23, 1.60, 1.33, 0.78). Endogyne (Fig. 3A View Figure 3 ): encircled spermathecae resemble a horseshoe, curving downwards (Fig. 3A View Figure 3 ).

Distribution.

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