Psiloderces palopoensis 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/97B946FD-697D-4C94-AFEF-7DE3CA26DB4F
taxon LSID	lsid:zoobank.org:act:97B946FD-697D-4C94-AFEF-7DE3CA26DB4F
treatment provided by	ZooKeys by Pensoft
scientific name	Psiloderces palopoensis Li & Chang
status	sp. nov.

Treatment

Psiloderces palopoensis Li & Chang sp. nov. Figs 14 View Figure 14 , 15 View Figure 15 , 29C View Figure 29 , 30 View Figure 30

Types.

Holotype: ♂ (IZCAS), Indonesia, Sulawesi, mountain in Palopo, 2°59.9210'S, 120°08.5650'E, 465 m, 2.IX.2017, H. Liu & Z. Chen. Paratype: 1♀ (IZCAS), same data as holotype.

Etymology.

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

Diagnosis.

Males of P. palopoensis sp. nov. can be distinguished from all other species of the genus by the swollen ovate shape of the bulb bearing a short embolus distally (Fig. 15B View Figure 15 ), 5 times shorter than the length of the tegulum (vs. absence of the extreme length difference of the embolus and tegulum in congeners), and relatively pale color of the male and female; female can be distinguished by widely separated, short, digitiform spermathecae (Fig. 14A View Figure 14 ).

Description.

Male (Holotype). Total length 1.41; carapace 0.55 long, 0.63 wide; abdomen 0.86 long, 0.50 wide. Carapace round and pale brown, with trident brown stripes medially and brown patches laterally (Fig. 14C View Figure 14 ). Chelicerae pale brown (Fig. 29C View Figure 29 ). Clypeus slanting, purplish. Endites purplish, light brown basally. Labium purplish, delimiting pair of light brown circular dots. Sternum purplish. Abdomen elongated, dorsum with indistinct dark brown pattern posteriorly, antero-ventrally brown with semi-circular patch, posterior with dark brown pattern delimiting light brown dotted vertical lines laterally and V-shaped medially. Legs uniformly brown; measurements: I 5.72 (0.55, 0.16, 1.88, 2.13, 1.00), II 5.78 (1.60, 0.20, 1.60, 1.63, 0.75), III missing, IV 8.33 (2.19, 0.25, 2.60, 2.20, 1.09). Palp (Fig. 15A-D View Figure 15 ): femur slender, 5 times longer than patella; patella not swollen; tibia 2 times shorter than femur; cymbium almost as wide and long as tibia, with protrusion; bulb pale brown, bulging ovate with embolus arising distally; embolus thinly, sheet-liked, 5 times shorter than entire length of tegulum (Fig. 15B View Figure 15 ).

Female (Paratype). General features and coloration similar to those of male (Fig. 14D, E View Figure 14 ). Measurements: total length 1.49; carapace 0.55 long, 0.60 wide; abdomen 0.94 long, 0.55 wide. Leg measurements: I 8.27 (2.19, 0.20, 2.50, 2.25, 1.13), II 6.28 (1.75, 0.25, 1.65, 1.75, 0.88), III 4.30 (1.30, 0.20, 1.40, 1.20, 0.20), IV 6.91 (1.88, 0.23, 2.00, 1.80, 1.00). Endogyne (Fig. 14A View Figure 14 ): widely spaced, digitiform spermathecae, ratio of length of spermatheca and the interdistance of digitiform spermathecae -1:10 (Fig. 14A View Figure 14 ).

Distribution.

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