Simaetha hainan Wang, Mi, Li & Xu, 2024, sp. nov.

Simaetha hainan sp. nov. Figs 27, 28, 48 Type material. Holotype ♂ (IZCAS -Ar 45284), China: • Hainan Province, Lingshui County, Diaoluoshan National Nature Reserve (18°39.96'N, 109°35.81'E, ca 80 m), 15. IV. 2009, G. Tang leg. Paratypes • 1 ♀ (IZCAS -Ar 45285), same data as for holotype; • 1 ♂ (IZCAS -Ar 45286), Diaoluoshan National Nature Reserve (18°40.44'N, 109°52.72'E, ca 580 m), 16. IV. 2009, G. Tang leg; • 1 ♂ (IZCAS -Ar 45287), Diaoluoshan National Nature Reserve (18°40.44'N, 109°52.60'E, ca 490 m), 10. VIII. 2010, G. Tang leg; • 1 ♀ (IZCAS -Ar 42288), Qiongzhong County, Yinggeling National Nature Reserve, Yinggezui Station (19°03.05'N, 109°33.75'E, ca 690 m), 25. VIII. 2010, G. Zhou leg; • 2 ♂ (TRU - JS 0772–0773), Ledong County, Jianfeng Township, Jianfengling National Nature Reserve, Main Peak (18°43.11'N, 108°52.32'E, ca 1400 m), 16. IV. 2019, C. Wang & Y. F. Yang leg. Etymology. The specific name is after the type locality, Hainan; noun in apposition. Diagnosis. Simaetha hainan sp. nov. resembles that of S. cheni Wang & Li, 2021, in having the blade-shaped retrolateral tibial apophysis (RTA), the presence of antero-marginal protuberances on anterior surface of chelicerae, but differs in: 1) embolus (E) straight (Fig. 27 A) vs curved prolaterally at distal portion (Wang and Li 2021: fig. 18 B); 2) tibia slightly longer than wide in retrolateral view (Fig. 27 B) vs wider than long (Wang and Li 2021: fig. 18 C); 3) epigynal hood (H) posteriorly located, and approximately half the length of anterior chamber of spermatheca (Fig. 28 A) vs anteriorly located and <1 / 4 length of anterior chamber of spermatheca (Wang and Li 2021: fig. 19 A, B). Description. Male (Figs 27, 28 C, D, F, G). Total length 2.74. Carapace 1.32 long, 1.08 wide. Abdomen 1.50 long, 1.06 wide. Eye sizes and interdistances: AME 0.32, ALE 0.16, PLE 0.16, AERW 0.90, PERW 1.04, EFL 0.64. Legs: I 2.41 (0.78, 0.50, 050, 0.33, 0.30), II 1.76 (0.53, 0.30, 0.38, 0.30, 0.25), III 1.63 (0.50, 0.25, 0.33, 0.30, 0.25), IV 2.06 (0.73, 0.30, 0.45, 0.33, 0.25). Carapace red-brown, covered with pale and golden scales, with central dark patch on cephalon. Chelicerae red-yellow, with base-lateral protuberances on anterior surface, two promarginal teeth and one retromarginal fissidentate tooth with two cusps. Leg I robust, with enlarged femora, and three and two pairs of ventral spines on tibiae and metatarsi, respectively. Dorsum of abdomen red-brown, covered completely by large scutum; venter brown, with two pairs of dotted lines medially. Palp (Fig. 27 A – C): femur length / width ratio ca 3.2; patella ~ 1.5 × longer than wide in retrolateral view; tibia slightly longer than wide, with lamellar retrolateral apophysis (RTA) acutely narrowed at distal portion and blunt apically in dorsal view; cymbium ~ 1.8 × longer than wide, with baso-retrolateral process (CP); tegulum oval; embolus (E) originating at ca 10: 30 o’clock position, straight, tapered to rather blunt tip. Female (Fig. 28 A, B, E). Total length 3.16. Carapace 1.34 long, 1.07 wide. Abdomen 1.95 long, 1.08 wide. Eye sizes and interdistances: AME 0.32, ALE 0.17, PLE 0.17, AERW 0.97, PERW 1.08, EFL 0.74. Legs: I 2.11 (0.75, 0.45, 0.38, 0.28, 0.25), II 1.89 (0.58, 0.35, 0.38, 0.33, 0.25), III 1.68 (0.50, 0.25, 0.35, 0.33, 0.25), IV 2.24 (0.83, 0.28, 0.50, 0.38, 0.25). Habitus (Fig. 28 E) similar to that of male except without base-lateral protuberances on anterior surface of chelicerae. Epigyne (Fig. 28 A, B) ~ 1.7 × wider than long, with posterior, sub-triangular hood (H) ~ 1 / 2 length of anterior chamber of spermatheca (AS); copulatory openings (CO) lateral to hood; copulatory ducts (CD) slightly curved medially, connected to antero-inner portions of anterior chamber of spermatheca, with small terminal accessory glands (AG); spermathecae (S) divided into oval anterior chamber extended posteriorly and spherical posterior chamber (PS); fertilization ducts (FD) arising from antero-inner portions of posterior chamber of spermatheca. Distribution. Known only from the type locality in Hainan, China (Fig. 48).