Thaiderces peterjaegeri 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/6E65FBCD-43A5-4C8B-AB90-943E9F8EF1A1
taxon LSID	lsid:zoobank.org:act:6E65FBCD-43A5-4C8B-AB90-943E9F8EF1A1
treatment provided by	ZooKeys by Pensoft
scientific name	Thaiderces peterjaegeri Li & Chang
status	sp. nov.

Treatment

Thaiderces peterjaegeri Li & Chang View in CoL sp. nov. Figs 1C View Figure 1 , 5 View Figure 5 , 6 View Figure 6 , 27E View Figure 27 , 29 View Figure 29

Types.

Holotype: ♂ (SMF), Myanmar, Chin State, Nat Ma Taung National Park, Road S of Nat Ma Taung Summit, Pristine Primary Forest, 21°10.125'N, 93°54.892'E, 2543 m, 16.V.2014, P. Jäger leg.

Etymology.

The species is named in honor of Peter Jäger (Frankfurt am Main, Germany), a prolific spider taxonomist.

Diagnosis.

Males of T. peterjaegeri sp. nov. resemble those of T. ganlan sp. nov. but can be distinguished by the narrow oblong shape of the bulb ( Fig. 6C View Figure 6 ) (vs. elliptical in T. ganlan sp. nov. ( Fig. 8C View Figure 8 )), the embolus is half the length of the entire bulb ( Fig. 6C View Figure 6 ) (vs. embolus almost equal in length to the entire bulb in T. ganlan sp. nov. ( Fig. 8C View Figure 8 )), and the embolus is thin and straight ( Fig. 6C View Figure 6 ) (vs. embolus is thicker and curved in T. ganlan sp. nov. ( Fig. 8B View Figure 8 )).

Description.

Male (holotype). Total length 1.87; carapace 0.78 long, 0.75 wide; abdomen 1.09 long, 0.75 wide. Carapace round and brown, with 3 longitudinal brown bands, lateral bands 5 times wider than the middle band ( Fig. 5A View Figure 5 ). Chelicerae brown ( Fig. 27E View Figure 27 ). Clypeus light brown. Endites light brown. Labium dark brown. Sternum with dark brown pattern. Abdomen elongated, dorsum with gradual light to dark brown pattern extending from anterior to posterior ( Fig. 5A View Figure 5 ), ventrum with gradual brown to dark brown pattern extending from anterior to posterior, anterior with elliptical dark brown patch medially, and a pair of lateral pale yellow patches, posterior part delimited with a pair of pale yellow straight lines ( Fig. 5B View Figure 5 ). Legs uniformly brown. Measurements: I‒III missing, IV 3.80 (1.00, 0.20, 1.00, 1.00, 0.60). Palp with scattered purplish spots ( Fig. 6 C–D View Figure 6 ): femur four times longer than patella; patella not swollen, tibia 2/3 the length of femur; cymbium dark with concentrated purplish spots, half the length of femur; bulb light yellow, narrow, and oblong, length/width ratio = 1.90; embolus thin and straight, arises distally, half the length of the entire bulb ( Fig. 6 View Figure 6 ).