Euochin ailao, Wang & Yu & Zhang, 2024

Wang, Weihang, Yu, Ying & Zhang, Junxia, 2024, On a new genus and twelve new species of jumping spiders from southwestern China (Araneae, Salticidae, Salticinae, Euophryini), Zootaxa 5538 (3), pp. 201-232 : 206-208

Euochin ailao sp. nov. (哀ṣ尧奇e)

Figs 30–49

Type material. Holotype: ♂ ( MHBU-ARA-00025244 ), CHINA: Yunnan Province, Baoshan City, Longling County, Longxin Town , 24.5076°N, 98.8426°E, 2160 m elev., 12 April 2023, leg. W. Wang.

Paratypes: 1♀ 1♂ ( MHBU-ARA-00025246 ), same data as holotype .

Etymology. The specific epithet is derived from the Ailao Kingdom in ancient western Yunnan, whose capital was once located in the modern Baoshan City. Noun in apposition.

Diagnosis. Males closely resemble E. shenjun Wang & Zhang, 2023 and E. yangmei Wang & Zhang, 2023 in genital characters, but can be clearly discriminated by the evidently swollen tip of RTA in retrolateral view. General appearance of the male palp also resembles that of E. albopalpalis (Bao & Peng, 2002) , but differs in: (1) the tapered tip of the embolus; (2) the cymbium lacking white setal tuft. Female can be distinguished from E. shenjun and E. yangmei by the spermathecae of subequal in width and length.

Description. Male. Habitus shown in Figs 36, 38 . Carapace length 1.662; abdomen length 1.193. Measurements of eyes: AME 0.325, ALE 0.197, PME 0.072, PLE 0.182. Measurements of legs: I 2.359 (0.735, 0.376, 0.527, 0.397, 0.324), II 2.125 (0.743, 0.336, 0.442, 0.286, 0.318), III 2.733 (0.961, 0.353, 0.574, 0.435, 0.410), IV 3.141 (1.018, 0.319, 0.722, 0.606, 0.476), leg formula: 4312. Color in ethanol: carapace dark brown, covered with yellow and white setae. Abdomen dark, with light bands and patches. Chelicera ( Fig. 40 ) with two promarginal and one retromarginal teeth. Palp ( Figs 41–42 , 45–47 ): dorsal femur and basal patella covered with dense white setae; embolic disc inclined ventro-retrolaterally; embolus relatively long, tip curved ventrally; CyF obvious; RTA relatively long, thighbone-like, with strikingly swollen tip.

Female. Habitus shown in Figs 37, 39 . Carapace length 1.660; abdomen length 1.875. Measurements of eyes: AME 0.353, ALE 0.233, PME 0.069, PLE 0.194. Measurements of legs: I 2.491 (0.821, 0.422, 0.550, 0.336, 0.362), II 2.392 (0.801, 0.363, 0.502, 0.411, 0.315), III 2.914 (1.028, 0.384, 0.553, 0.539, 0.410), IV 3.298 (1.049, 0.343, 0.703, 0.752, 0.451), leg formula: 4312. Color in ethanol: similar to that of male, but in lighter coloration. Chelicerae as in male. Epigyne ( Figs 43–44 , 48–49 ): epigynal window much larger than the spermatheca in ventral view; rim of epigynal window developed; copulatory openings located anteriorly; copulatory ducts thick.

Distribution. China (Yunnan).

Figures

FIGURES 30–35. Euochin ailao sp. nov., male (30–32) and female (33–35).

FIGURES 36–44. Euochin ailao sp. nov., holotype male (36, 38, 40–42) and paratype female (37, 39, 43–44). 36–37. Habitus, in dorsal view; 38–39. Carapace, in frontal view; 40. Left male chelicera; 41. Left male palp of holotype, in ventral view; 42. Detail of RTA in retrolateral view; 43–44. Epigyne of paratype, in ventral (43) and dorsal (44) views.

FIGURES 45–49. Genitalia of Euochin ailao sp. nov.. 45–47. Left male palp of holotype, in prolateral (45), ventral (46) and retrolateral (47) views; 48–49. Epigyne of paratype, in ventral (48) and dorsal (49) views.