Psiloderces bolang 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/A62B1BD7-D14F-4DBF-869F-31938299D18A
taxon LSID	lsid:zoobank.org:act:A62B1BD7-D14F-4DBF-869F-31938299D18A
treatment provided by	ZooKeys by Pensoft
scientific name	Psiloderces bolang Li & Chang
status	sp. nov.

Treatment

Psiloderces bolang Li & Chang sp. nov. Figs 22 View Figure 22 , 23 View Figure 23 , 29E View Figure 29 , 30 View Figure 30

Types.

Holotype: ♂ (IZCAS), Indonesia, Sulawesi, mountain Palopo, 2°57.6000'S, 120°6.0'E, 509 m, 3.IX.2017, H. Liu & Z. Chen. Paratype: 1♀ (IZCAS), same data as holotype.

Etymology.

The species name is a noun in apposition derived from the Chinese pinyin “bōlàng” (wave) and refers to the unique undulated base of the bulb which resembles a wave pattern.

Diagnosis.

Males of P. bolang sp. nov. resemble those of P. torajanus by the trilobate base of the bulb and indented ventrally but can be distinguished by the undivided bulb (vs. bulb distinctly divided into two parts (proximal and distal); figs 8, 9 in Deeleman-Reinhold 1995), the bulb with a crooked periphery and rounded tip (vs. bulb with smooth periphery and pointed tip), the length of cymbial protrusion is at least half the width of the bulb (vs. length of cymbial protrusion narrower than the width of the bulb); females of both species resemble looped spermathecae but can be distinguished by rippled spermathecae (vs. smooth elliptical spermathecae).

Description.

Male (Holotype). Total length 1.49; carapace 0.47 long, 0.60 wide; abdomen 1.02 long, 0.65 wide. Carapace round and brown, with 3 longitudinal dark brown bands, median band half length the carapace, lateral bands 3 times wider than median band (Fig. 22C View Figure 22 ). Chelicerae brown, promargin with lamina bearing 2 triangular extensions (Fig. 29E View Figure 29 ). Clypeus dark brown. Endites dark brown. Labium dark brown delimiting pair of indistinct light brown circular dots. Sternum dark brown, delimiting light brown patch medially. Abdomen elongated, dorsum with dark brown stripes, antero-ventrally with elliptical patch, posterior part with pair of light brown longitudinal lines laterally. Legs uniformly brown; measurements: I 7.73 (2.00, 0.20, 2.40, 2.13, 1.00), II 5.50 (1.30, 0.20, 1.70, 1.50, 0.80), III 5.34 (1.09, 0.16, 1.71, 1.75, 0.63), IV missing. Palp (Fig. 23A-D View Figure 23 ): femur slender, 3 times longer than patella; patella not swollen; tibia 2 times shorter than femur; cymbium almost as long and wide as tibia, protrusion darkens distally; bulb pale brown, undulate basally and at the margins, pyriform with embolus located anteriorly, with indentation ventrally; embolus laminar and gradually tapering (Fig. 23B View Figure 23 ).

Female (Paratype). General features and coloration similar to those of male (Fig. 22D, E View Figure 22 ). Measurements: total length 1.30; carapace 0.50 long, 0.60 wide; abdomen 0.80 long, 0.55 wide. Leg measurements: I 4.52 (1.00, 0.16, 1.71, 1.02, 0.63), II missing, III 3.12 (0.80, 0.13, 0.88, 0.81, 0.50), IV 4.60 (1.20, 0.20, 1.40, 1.10, 0.70). Endogyne (Fig. 22A View Figure 22 ): spermathecae looped transverse anteriorly, rippled posteriorly (Fig. 22A View Figure 22 ).

Distribution.

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