Diaea erji Chen, Liu & Hu, 2025, sp. nov.

Diaea erji sp. nov. Figs 1A, 2, 7 Type material. Holotype: ♀ (QZMS01311), CHINA: Hubei Province: Enshi Tujia and Miao Autonomous Prefecture, Xuan’en County, Qizimeishan National Nature Reserve, Chunmuying Town, Huoshaobao; 30.02417°N, 109.75645°E; 1919 m; 13 July 2023; Changhao Hu and Mian Wei leg. Etymology. The specific name is derived from Chinese Pinyin ěr jī (meaning “earphone”), referring to the earphone-shaped internal genitalia. Diagnosis. Diaea erji sp. nov. is characterized by the unique earphone-shaped internal genitalia. Among Asian species, it resembles D. suspiciosa O. Pickard-Cambridge, 1885 (cf. Figs 2A, B and figs 108A, B in Song & Zhu 1997) in having similar vulval structure, but can be recognized by: 1. epigynal hood small, almost as narrow as copulatory openings (vs. large, almost 1/3 width of epigynal field in D. suspiciosa); 2. copulatory openings anteriorly situated (vs. posteriorly situated in D. suspiciosa); and 3. copulatory ducts thinner than spermathecae (vs. almost as wide as spermathecae in D. suspiciosa). Description. Female: Total length 3.93. Carapace 1.81 long, 1.80 wide; opisthosoma 2.15 long, 1.44 wide. Eye sizes and interdistances: AME 0.07, ALE 0.14, PME 0.06, PLE 0.10, AME–AME 0.17, AME–ALE 0.12, PME–PME 0.23, PME–PLE 0.27, AME–PME 0.16, ALE–PLE 0.18. Leg measurements: I 7.10 (2.20, 0.75, 1.97, 1.44, 0.74); II 7.12 (2.06, 0.72, 1.99, 1.58, 0.77); III 3.89 (1.31, 0.41, 1.03, 0.71, 0.43); IV 3.96 (1.36, 0.58, 0.91, 0.66, 0.45). Leg formula: 2143. Epigyne (Figs 2A, B). Epigyne membranous; copulatory openings located anteriorly; a small hood located between copulatory openings. Copulatory ducts simple, anterior part straight and posterior part slightly curved. Spermathecae oval, situated posteriorly. Fertilization ducts unobvious. Colouration in ethanol (Figs 2C, D). Carapace, chelicerae, endites, labium, sternum, palps and legs yellow. Opisthosoma yellowish white, dorsum with a light brown longitudinal line and two pairs brown spots, venter with two rows of brown spots. Color of live specimen pale green (Fig. 1A). Male: Unknown. Distribution. Known only from the type locality (Fig. 7).