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

Stegana (Steganina) mailangang Li & Chen, sp. nov. (Figs. 11C, 11D, 49) Diagnosis. This species slightly resembles S. (S.) cyclophylla Chen & Chen, 2009 in the shape of hypandrium, pregonite, and subepandrial sclerite (as figs. 9–11 in Chen & Chen 2009, Fig. 49C, D, G), but can be distinguished from the latter by having the aedeagus distally with some minute, serrated processes (Fig. 49C, D); the aedeagal sheath lacking serrated process (Fig. 49E, F). Description. Male: First flagellomere black. Clypeus yellow. Mesonotum black medially, dark brown laterally (Fig. 11C). Katepisternum yellowish (Fig. 11D). Scutellum black (Fig. 11C). Halter mostly black (Fig. 11D). Fore femur with a row of 3 long setae on distal part of posteroventral surface. Abdominal tergites black (Fig. 11C, D); sternites brown, about 2 times as wide as long. Male terminalia (Fig. 49): Epandrium with ca. 14 setae on dorsal to posterior portions per side (Fig. 49A). Surstylus with 1 peg-like tooth near distal margin and some setulae distally, lacking pubescence (Fig. 49A, B). Cercus with much pubescence (Fig. 49A). Hypandrium roundly expanded anteromedially (Fig. 49C, D). Pregonite fused with hypandrium, with 3 sensilla (Fig. 49C, D). Aedeagus roundly expanded distally, with some pubescence distoventrally (Fig. 49C, D). Subepandrial sclerite vaulted, expanded dorsally (Fig. 49G). Measurements and indices. BL = 2.77 mm in holotype, ThL = 1.33 mm, WL = 2.75 mm, WW = 1.32 mm, arb = 7/5, avd = 0.68, adf = 1.35, flw = 1.78, FW/HW = 0.34, ch/o = 0.23, prorb = 1.21, rcorb = 0.97, vb = 1.45, dcl = 0.59, presctl = 0.49, sctl = 1.55, sterno = 0.76, orbito = 1.78, dcp = 0.30, sctlp = 1.69, C = 2.18, 4c = 1.14, 4v = 1.95, 5x = 1.65, ac = 8.09, M = 0.72, C3F = 0.69. Type material. Holotype ♂ (SCAU, No. 125694, DNA #2623), CHINA: Wangtianshu, Mengla, Yunnan, 21°36'09''N, 101°35'06''E, alt. 660m, 17.xii.2017, ex tree trunk, H.W. Chen. Distribution. China (Yunnan). Etymology. From the word " mailangang " in Dai language from the Dai nationality living in Yunnan, China, referring to the meaning of the type locality (Wangtianshu: sky tree).
Published as part of 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), pp. 1-109 in Zootaxa 5250 (1) on pages 83-84, DOI: 10.11646/zootaxa.5250.1.1, http://zenodo.org/record/7705657