Thaiderces jiazi Li & Chang

Chang, Wan-Jin & Li, Shuqiang, 2019, Fourteen new species of the spider genus Thaiderces from Southeast Asia (Araneae, Psilodercidae), ZooKeys 869, pp. 103-146 : 103

publication ID	https://dx.doi.org/10.3897/zookeys.869.35546
publication LSID	lsid:zoobank.org:pub:AFF62E38-4FD4-4E5D-9D92-3EC97E4A4368
persistent identifier	https://treatment.plazi.org/id/C21D07D6-0B6C-4AE3-847E-70B9953F5DEB
taxon LSID	lsid:zoobank.org:act:C21D07D6-0B6C-4AE3-847E-70B9953F5DEB
treatment provided by	ZooKeys by Pensoft
scientific name	Thaiderces jiazi Li & Chang
status	sp. nov.

Treatment

Thaiderces jiazi Li & Chang sp. nov. Figs 2G View Figure 2 , 15 View Figure 15 , 27I View Figure 27 , 29 View Figure 29

Types.

Holotype: ♀ (IZCAS), Thailand, Satun Province, Khuang Kalong District, Khao Wang Cave, 06°56.3167'N, 100°1.3083'E, 127 m, 17.X.2015, Zhao Q., Zhou G., Chen Z.

Etymology.

The species name is a noun in apposition derived from the Chinese pinyin jiázǐ (clamp) and refers to the spermathecae structure which resembles a face clamp ( Fig. 15A View Figure 15 ).

Diagnosis.

Thaiderces jiazi sp. nov. can be distinguished from other species by the unique pattern on the carapace, with trident purplish stripes medially and purplish stripes laterally ( Fig. 15C View Figure 15 ), a pair of spermathecae that resemble a face clamp (curved perpendicularly and oppositely directed), attached to a funnel-shaped structure posteriorly ( Fig. 15A View Figure 15 ) (vs. stalked spermathecae with oblong heads connected by a horizontal arched duct in T. zuichun sp. nov.).

Description.

Female. Total length 1.47; carapace 0.54 long, 0.62 wide; abdomen 0.93 long, 0.65 wide. Carapace round and pale yellow, with trident purplish stripes medially and purplish stripes laterally. Chelicerae brown ( Fig. 27I View Figure 27 ). Clypeus brown medially. Endites purple. Labium yellow. Sternum with purplish pattern. Abdomen elongated, pale yellow, almost plain without distinct pattern ( Fig. 15C View Figure 15 ), ventrum with purplish and yellowish indistinct pattern, with medial epigastric area semi-circular ( Fig. 15D View Figure 15 ). Legs uniformly brown; measurements: I missing, II 5.27 (1.40, 0.25, 1.50, 1.37, 0.75), III 4.23 (1.12, 0.20, 1.20, 1.09, 0.62), IV 4.12 (1.09, 0.20, 1.20, 1.09, 0.54). Endogyne: a pair of stalked spermathecae curved perpendicularly and oppositely directed, stalk length is eight times the width of the spermathecae, spermathecae connected by stalks to funnel-shaped base, ratio of the width of funnel to the width of a stalked spermatheca 1: 10 ( Fig. 15A View Figure 15 ).

Male. Unknown.

Distribution.

Known only from the type locality ( Fig. 29 View Figure 29 ).