Stegana (Steganina) liusanjieae Li & Chen

WANG, YA-LIAN, LI, BING-XUE, CUI, MENG-DI, ZHANG, YUAN, WANG, LE, ZHANG, CAI-HONG, TSAUR, SHUN-CHERN, CHEN, HONG-WEI & HUANG, JIA, 2023, Revision of the subgenus Stegana (Steganina) from China, with assessment of species delimitation using DNA barcodes (Diptera, Drosophilidae), Zootaxa 5250 (1), pp. 1-109 : 81-82

Stegana (Steganina) liusanjieae Li & Chen , sp. nov.

( Figs. 10I, 10J , 48 )

Diagnosis. This species is similar to S. (S.) hirticeps Wang, Gao, & Chen, 2013 in the shape of male terminalia (as fig. 5 in Wang et al. 2013, Fig. 48A–F ), but can be distinguished from the latter by having the oval cercus ( Fig. 48A ); the aedeagus with numerous minute, serrated processes laterally ( Fig. 48B, C ).

Description. Male and female: First flagellomere yellow. Clypeus yellow. Mesonotum slightly brownish medially, yellow laterally ( Fig. 10I ). Katepisternum yellowish ( Fig. 10J ). Scutellum brownish ( Fig. 10I ). Halter mostly white ( Fig. 10J ). Fore femur with a row of 3 long setae on distal part of posteroventral surface. Abdominal tergites mostly yellow ( Fig. 10I, J ); sternites yellow, about 1.6 times as wide as long. Male terminalia ( Fig. 48A–F ): Epandrium with ca. 15 setae on dorsal to posterior portions per side ( Fig. 48A ). Surstylus lacking peg-like tooth and pubescence, with some minute, serrated processes distally and setulae near distal margin ( Fig. 48A ). Cercus lacking pubescence ( Fig. 48A ). Hypandrium roundly expanded anteromedially ( Fig. 48B, C ). Pregonite small, with 2 sensilla ( Fig. 48B, C ). Aedeagus with much pubescence distally ( Fig. 48B, C ). Aedeagal sheath distally dorsad curved and with some minute, serrated processes ( Fig. 48D, E ). Subepandrial sclerite vaulted ( Fig. 48F ). Female terminalia ( Fig. 48G–I ): Epiproct with some setae on distal 1/2 ( Fig. 48G ). Cercus and hypoproct with numerous setae and much pubescence ( Fig. 48G, I ). Eight sternite slightly longer than wide, glabrous on basal 3/4, with some setae and much pubescence on distal 1/4 ( Fig. 48H ).

Measurements and indices. BL = 2.88 mm in holotype, ThL = 1.59 mm, WL = 3.01 mm, WW = 1.17 mm, arb = 6/4, avd = 0.95, adf = 1.05, flw = 2.85, FW/HW = 0.35, ch/o = 0.27, prorb = 1.13, rcorb = 0.66, vb = 0.65, dcl = 0.56, presctl = 0.51, sctl = 1.78, sterno = 1.20, orbito = 1.65, dcp = 0.30, sctlp = 1.79, C = 1.74, 4c = 1.32, 4v = 1.97, 5x = 1.42, ac = 10.08, M = 0.55, C3F = 0.64.

Type materials. Holotype ♂ ( SCAU, No. 125669, DNA #1951), CHINA: Jiuwanshan, Huanjiang , Guangxi, 25°18'48''N, 108°38'02''E, alt. 1500m, 14.ix.2015, ex tree trunk, Y.Q. Liu . Paratypes: 1♀ ( SCAU, No. 125670), other data same as holotype.

Distribution. China (Guangxi).

Etymology. Patronym, in honour of "Liu Sanjie", a famous girl singer from the Zhuang Nationality living in Guangxi, China .

Figures

FIGURE 10. Head, thorax, and abdomen in dorsal and lateral views: A, B. Stegana (Steganina) kanda sp. nov.; C, D. S. (S.) labao Cui & Chen, sp. nov.; E, F. S. (S.) lancang Li & Chen, sp. nov.; G, H. S. (S.) latifoliacea Wang & Chen, sp. nov.; I, J. S. (S.) liusanjieae Li & Chen, sp. nov.

FIGURE 48. Stegana (Steganina) liusanjie Li & Chen, sp. nov., male (A–F) and female terminalia (G–I). A. Epandrium, surstylus, and cercus in lateral view; B, C. Hypandrium, pregonite, aedeagus, and phallapodeme in ventral and lateral views; D, E. Aedeagal sheath in ventral and lateral views; F. Subepandrial sclerite in ventral view; G. Epiproct and cercus in dorsal view; H. Eighth sternite in ventral view; I. Hypoproct in ventral view.