Hippasosa thailandica, Wang & Irfan & Zhang, 2025

Hippasosa thailandica sp. nov.

Figs 1 A, B View Figure 1 , 2 A, B View Figure 2 , 3 A – C View Figure 3 , 7 View Figure 7

Type material.

Holotype • ♂, Thailand, Pai , 19°17.800'N, 98°27.925'E, elev. 478 m, 7 July 2014, Z. S. Zhang, L. Y. Wang, Z. Cao, X. K. Jiang and T. Lu leg.; SWUC -T-LY-20-01 GoogleMaps . Paratype: • 1 ♂, Soi Pracha Nimit Bridge Tambon San Pong, Amphoe Mae Rim , Chiang Mai, 18°56.627'N, 98°58.518'E, elev. 318 m, 11 July 2014, Z. S. Zhang, L. Y. Wang, Z. Cao, X. K. Jiang & T. Lu leg.; SWUC -T-LY-20-02 GoogleMaps .

Etymology.

The species is named for the country where the type locality is located.

Diagnosis.

Males of Hippasosa thailandica sp. nov. resemble those of H. qiongzhongensis and H. yunnanensis sp. nov. in having a similar body and palpal conformation (Figs 2 View Figure 2 – 6 View Figure 6 ; Wang et al. 2021: fig. 33), but the new species differs from them in having a curved retrolateral arm of the median apophysis (Figs 2 A View Figure 2 , 3 B, C View Figure 3 ) vs strongly spiral in H. qiongzhongensis ( Wang et al. 2021, figs 33 C – F) and slightly spiral in H. yunnanensis sp. nov. (Figs 4 A, B View Figure 4 , 5 C, D View Figure 5 ).

Description.

Male (holotype, Fig. 3 A View Figure 3 ). Total length 16.91. Prosoma 9.35 long, 6.88 wide; opisthosoma 8.45 long, 5.15 wide. Carapace yellowish brown. Eye region black. Fovea longitudinal. Cervical groove and radial furrows indistinct. Eye sizes and interdistances: AME 0.43, ALE 0.28, PME 0.70, PLE 0.66; AME – AME 0.22, AME – ALE 0.10, PME – PME 0.48, PME – PLE 0.51. Clypeus height 0.90. Chelicerae elongate, blackish brown, with two promarginal and three retromarginal teeth. Labium and endites yellowish brown, longer than wide. Sternum yellowish brown, scutellate, with brown setae. Legs yellowish brown, with black pigmentation. Leg measurements: I 26.94 (7.11, 9.03, 6.30, 4.50); II 26.91 (7.37, 8.50, 6.55, 4.49); III 28.38 (7.13, 9.42, 7.30, 4.53); IV 33.42 (8.47, 10.45, 9.38, 5.12). Leg formula: 4312. Opisthosoma oval, dorsum yellowish brown, with black marking and lanceolate cardiac mark in anterior half. Venter yellowish brown.

Palp (Figs 2 A, B View Figure 2 , 3 B, C View Figure 3 ). Subtegulum situated at the base of the bulb prolaterally. Terminal apophysis with two branches, both hooked. Conductor broad, membranous. Median apophysis with two processes: anterior arm beak-like, retrolateral arm finger-like. Embolus arched, thin, and long.

Female. unknown.

Variation.

Males (n = 2): total length 16.91–18.79.

Distribution.

Thailand (Fig. 7 View Figure 7 ).