Stegana (Steganina) zhuoma Cui & 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 : 102

Stegana (Steganina) zhuoma Cui & Chen , sp. nov.

( Figs. 14G, 14H , 65D–F )

Diagnosis. This species is similar to S. (S.) zaduo sp. nov. in the shape of female terminalia ( Fig. 65 ), but can be distinguished from the latter by having the yellowish katepisternum brown on anterior corner ( Fig. 14H ); the 8th sternite nearly squared, with several setae and much pubescence on distolateral 1/3 ( Fig. 65E ).

Description. Female: First flagellomere brown. Clypeus black. Mesonotum black medially, brown laterally ( Fig. 14G ). Scutellum black, yellow at tip ( Fig. 14G ). Halter mostly white ( Fig. 14H ). Fore femur with a row of 3 long, strong setae on distal part of posteroventral surface. All abdominal tergites dark brown to black ( Fig. 14G, H ); sternites brown, about 2 times as wide as long. Female terminalia ( Fig. 65D–F ): Epiproct with several setae, lacking pubescence ( Fig. 65D ). Cercus and hypoproct with numerous setae and much pubescence ( Fig. 65D, F ). Eighth sternite glabrous on basal 2/3 ( Fig. 65E ).

Measurements and indices. BL = 2.70 mm in holotype, ThL = 1.45 mm, WL = 2.92 mm, WW = 1.26 mm, arb = 7/5, avd = 0.85, adf = 1.17, flw = 2.22, FW/HW = 0.39, ch/o = 0.25, prorb = 1.02, rcorb = 0.76, vb = 0.74, dcl = 0.48, presctl = 0.57, sctl = damaged, sterno = 0.77, orbito = 1.90, dcp = 0.32, sctlp = 1.45, C = 1.66, 4c = 1.35, 4v = 1.95, 5x = 1.45, ac = 12.89, M = 0.71, C3F = 0.63.

Type material. Holotype ♀ ( SCAU, No. 125789, DNA #2757), Tongmai, Bomi , Xizang, 30°06'00''N, 95°05'00''E, alt. 2000m, 11.x.2010, ex tree trunk, L. Wang.

Distribution. China (Xizang).

Etymology. From the word " zhuoma " in Zang language from the Zang nationality living in Xizang, China, referring to women.

Figures

FIGURE 14. Head, thorax, and abdomen in dorsal and lateral views: A, B. S. (S.) yani Li & Chen, sp. nov.; C, D. S. (S.) yixiang Zhang & Chen, sp. nov.; E, F. S. (S.) zaduo Cui & Chen, sp. nov.; G, H. S. (S.) zhuoma Cui & Chen, sp. nov.

FIGURE 65. Female terminalia in Stegana (Steganina) zaduo Cui & Chen, sp. nov. (A–C) and Stegana (Steganina) zhuoma