Mutatus yintiaoling, Mu & Wang & Zhang & Zhang, 2025

Mutatus yintiaoling sp. nov.

Chinese name: 阴条岭幻蛛 Figs 7 View Figure 7 , 8 View Figure 8

Type material.

Holotype ♂ China • Chongqing Municipality: Yintiaoling National Nature Reserve, Zhuanping (31°29'43.12"N, 109°55'17.96"E, elev. 1752 m), 23 May 2022, H. L. Zhu leg. GoogleMaps

Etymology.

This specific name is derived from the type locality; a noun in apposition.

Diagnosis.

This new species can be differentiated from M. gelao sp. nov., M. tujia sp. nov., and M. tianyan sp. nov. by the shorter prolateral tegular apophysis (vs long; compare Fig. 7 B View Figure 7 with Figs 2 B View Figure 2 , 4 D View Figure 4 , 5 C View Figure 5 ) and the truncated and more curved tip of the long branch of retrolateral tibial apophysis (vs not truncated and curved tip; compare Fig. 7 C, E View Figure 7 with Figs 2 E View Figure 2 , 4 D View Figure 4 , 5 B View Figure 5 ).

Description.

Male (holotype, Fig. 7 A View Figure 7 ). Total length 3.90, carapace 1.90 long, 1.63 wide; abdomen 2.00 long, 1.28 wide. Eye sizes and interdistances: AME 0.10, ALE 0.13, PME 0.10, PLE 0.10; AME – AME 0.04, AME – ALE 0.02, ALE – ALE 0.27, PME – PME 0.10, PME – PLE 0.06, PLE – PLE 0.42, ALE – PLE 0.07. EAW 0.58, CRW 0.89, EAW / CRW 0.65. CRW / CW 0.54. MOA 0.26 long, anterior width 0.24, posterior width 0.30. Clypeal height 0.15, CH / AME 1.50. Labium 0.25 long, 0.27 wide. Sternum 0.96 long, 1.00 wide. Carapace oval, brown, cervical groove inconspicuous. Sternum brown, without pattern. Labium and endite as same color as sternum. Abdomen lighter-colored than carapace, smooth, with large dorsal scutum covering almost entire abdomen. Legs brown.

Palp (Fig. 7 B – E View Figure 7 ). Femoral apophysis (FA) well developed, located at middle part. Patella longer than tibia, as half the length as femur. Tibia longer than wide, with 2 apophyses, retroventral apophysis (RvTA) tail-shaped, tip slightly curved, tapering towards tip; retrolateral apophysis (RTA) strong, longer and wider than RvTA, abruptly narrowed at middle part in dorsal view, tip curved towards cymbium in dorsal view. Bulb pyriform, sperm duct (SD) distinct, V-shaped. Prolateral tegular apophysis (PTA) short, originating at nearly 9 o’clock position, tip truncated. Tegular sheet (TS) spade-shaped, anterior part large and wide, posterior part small, protuberance-shaped. Embolus (E) needle-like, slightly curved, tapering towards tip.

Female: unknown.

Measurement of legs:

Spination of legs:

Distribution.

Known only from the type locality.