Yunohamella gutenbergi R. Zhong, J. Liu & Hu sp. nov.

Figs 1, 2, 10

Type material.

Holotype • male: China, Hubei Province: Enshi Tujia and Miao Autonomous Prefecture, Xuan’en County, Qizimeishan National Nature Reserve, Changtanhe Dong Autonomous Town, Shanyangxi; 30.08 ° N, 109.75 ° E; elev. 810 m; 3 July 2023; Changhao Hu & Mian Wei leg. (CBEE, QZMS 01049).

Etymology.

The species is named after the geophysicist “ Beno Gutenberg ” who found the “ core-mantle discontinuity ”, the boundary between the mantle and the core of Earth.

Diagnosis.

Males of Y. gutenbergi R. Zhong, J. Liu & Hu, sp. nov. can be distinguished from all congeners in having a unique 2 - shaped curved sperm duct on the tegulum and a filiform, curved embolus (Fig. 2 A – C). Females are unknown.

Description.

Male (holotype) measurements: total length 2.37. Carapace 1.10 long, 0.94 wide. Abdomen 1.29 long, 0.90 wide. Eyes: AME 0.10, ALE 0.08, PME 0.07, PLE 0.08, AME – AME 0.07, AME – ALE 0.04, PME – PME 0.06, PME – PLE 0.08, AME – PME 0.10, ALE – PLE 0.00. Measurements of legs [leg II missing]: I — (2.98, —, —, —, —), III 4.09 (1.38, 0.30, 0.86, 1.05, 0.50), IV 5.12 (1.79, 0.32, 1.35, 1.36, 0.30).

Carapace round, brown, and with a narrow, trapezoid, black mark between head region and median furrow; radial furrow black. Sternum shaped like an inverted triangle and brown. Chelicerae and legs orange. Abdomen oval; dorsally black, with a longitudinal mark composed of white and red spots; venter dark brown; anterior part of genital groove and anterior part of spinnerets black; lateral abdomen with several white spots. Spinnerets dark brown (Fig. 1 A – C).

Cymbium reniform. Cymbial hood longitudinal, almost ½ length of cymbium. Subtegulum bowl-shaped. Tegulum with a narrow prolateral part and a large retrolateral part; retrolateral part with a thin area that holds embolic base; sperm duct half surrounds thin area, and extends as 2 - shaped, then straight down. Median apophysis lamellar. Tegular apophysis irregular. Length of median apophysis and tegular apophysis almost as long as width of bulb. Conductor sclerotized, with a triangular terminal apophysis. Embolus filiform and curved, with a lamellar base (Fig. 2 A – D).

Female. Unknown.

Distribution.

Known only from the type locality (Fig. 10).