Stegana (Steganina) dendrophila Zhang & Chen, sp. nov

Stegana (Steganina) dendrophila Zhang & Chen, sp. nov. (Figs. 8A, 8B, 36) Diagnosis. This species resembles S. (S.) cyclophylla Chen & Chen, 2009 in the shape of hypandrium, pregonite, and aedeagus (as figs. 10, 11 in Chen & Chen 2009, Fig. 36B, C), but can be distinguished from the latter by having the surstylus lacking peg-like tooth (Fig. 36A); the aedeagus with numerous minute, serrated processes distally, lacking pubescence (Fig. 36B, C); the subepandrial sclerite slightly squared, concaved anteromedially (Fig. 36D). Description. Male: First flagellomere yellow on basal 1/3, black on distal 2/3. Clypeus brown medially, yellow laterally. Mesonotum and scutellum black (Fig. 8A). Katepisternum yellowish, brown on anterior corner (Fig. 8B). Halter mostly brownish (Fig. 8B). Fore femur with a row of 3 long setae on distal part of posteroventral surface. Abdominal tergites dark brown (Fig. 8A, B); sternites brown, slightly wider than long. Male terminalia (Fig. 36): Epandrium with ca. 20 setae on dorsal to posterior portions per side (Fig. 36A). Surstylus with several setulae and some pubescence distally (Fig. 36A). Cercus with much pubescence (Fig. 36A). Hypandrium expanded anteromedially (Fig. 36B, C). Pregonite fused with hypandrium and small, with 4 sensilla (Fig. 36B, C). Aedeagal sheath with some numerous minute, serrated processes distally (Fig. 36B, C). Measurements and indices. BL = 3.20 mm in holotype, ThL = 1.30 mm, WL = 1.93 mm, WW = 1.07 mm, arb = 9/6, avd = 0.83, adf = 1.71, flw = 1.29, FW/HW = 0.46, ch/o = 0.14, prorb = 1.45, rcorb = 1.00, vb = 0.33, dcl = 0.66, presctl = 0.70, sctl = 2.77, sterno = 1.00, orbito = 2.50, dcp = 0.19, sctlp = 2.50, C = 1.84, 4c = 1.23, 4v = 1.80, 5x = 1.33, ac = 9.25, M = 0.53, C3F = 0.62. Type material. Holotype ♂ (SCAU, No. 125633, DNA #1338, 2770), CHINA: Menglun, Mengla, Yunnan, 21°47'29''N, 101°22'59''E, alt. 680m, 28.ix.2011, ex tree trunk, H.W. Chen. Distribution. China (Yunnan). Etymology. From the Greek word '' dendrophilus '' (= dendrophilous), referring to the arboreal Steganina flies.
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 66-67, DOI: 10.11646/zootaxa.5250.1.1, http://zenodo.org/record/7705657