Stegana (Steganina) yani Li & Chen, sp. nov.
Creators: name: WANG, YA-LIAN
name: LI, BING-XUE
name: CUI, MENG-DI
name: ZHANG, YUAN
name: WANG, LE
name: ZHANG, CAI-HONG
name: TSAUR, SHUN-CHERN
name: CHEN, HONG-WEI
name: HUANG, JIA
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Drosophilidae
Stegana
Stegana yani

description: Stegana (Steganina) yani Li & Chen, sp. nov.
(Figs. 14A, 14B, 63)
Diagnosis. This species is similar to S. (S.) cornuta sp. nov. in the shape of epandrium, surstylus, cercus (Figs. 32A, 32B, 63A), aedeagus (Figs. 32C, 32D, 63B, 63C), and subepandrial sclerite (Figs.32E, 32F, 63D, 63E), but can be distinguished from the latter by having the cercus with sparse pubescence (Fig. 63A); the pregonite blurry or absent (Fig. 63B, C); the subepandrial sclerite nearly triangular (Fig. 63F).
Description. Male and female: First flagellomere brown. Clypeus brown. Mesonotum brownish (Fig. 14A). Katepisternum yellowish (Fig. 14B). Scutellum brown (Fig. 14A). Halter mostly grey (Fig. 14B). Fore femur with a row of 3 long setae on distal part of posteroventral surface. Abdominal tergites dark brown (Fig. 14A, B); sternites dark brown, about 1.2 times as wide as long. Male terminalia (Fig. 63): Epandrium with ca. 12 setae on dorsal to posterior portions per side (Fig. 63A). Surstylus with 1 peg-like tooth and some setulae near distal margin, lacking serrated process and pubescence (Fig. 63A). Hypandrium roundly expanded anteromedially (Fig. 63B, C). Aedeagus with numerous minute, serrated processes distodorsally and much pubescence distoventrally (Fig. 63B, C). Aedeagal sheath distally slender, strongly dorsad curved, and with some minute, serrated processes (Fig. 63D, E).
Measurements and indices. BL = 2.39 mm in holotype (2.25–2.57 in 5♂, 2.47–3.05 in 5♀ paratypes), ThL = 1.07 mm (1.14–1.29 in ♂, 0.99–1.46 in ♀), WL = 2.21 mm (2.12–2.43 in ♂, 2.14–2.66 in ♀), WW = 0.92 mm (0.93–1.04 in ♂, 0.94–1.07 in ♀), arb = 6/4 (6–8/4–5), avd = 0.81 (0.75–0.89), adf = 1.17 (0.80–1.32), flw = 2.00 (1.41–2.22), FW/HW = 0.43 (0.37–0.43), ch/o = 0.34 (0.24–0.42), prorb = 1.17 (0.72–1.36), rcorb = 0.60 (0.69– 0.87), vb = 0.74 (0.68–1.13), dcl = 0.53 (0.65–0.94), presctl = 0.76 (0.46–0.84), sctl = 2.52 (1.25–2.69), sterno = 0.73 (0.64–1.07), orbito = 1.63 (1.61–2.41), dcp = 0.35 (0.31–0.36), sctlp = 1.95 (1.65–2.17), C = 1.87 (1.57–1.84), 4c = 1.23 (0.91–1.36), 4v = 2.06 (1.47–2.19), 5x = 1.13 (1.31–1.82), ac = 9.88 (8.55–11.22), M = 0.56 (0.55–0.76), C3F = 0.62 (0.53–0.70).
Type materials. Holotype ♂ (SCAU, No.125732, DNA #2179), CHINA: Qimaba, Lüchun, Yunnan, 22°49'08''N, 102°17'25''E, alt. 600m, 30.x.2016, ex tussock, H.W. Chen. Paratypes: 1♀ (SCAU, No. 125734, DNA #2182), Er'pu, Lüchun, Yunnan, 22°37'06''N, 102°21'06''E, alt. 600m, 28.x.2016, ex tree trunk, H.W. Chen; 2♂, 3♀ (SCAU, Nos. 125735–39, DNA #2728), Longtan Park, Ximeng, Yunnan, 22°38'55''N, 99°36'02''E, alt. 1150m, 17.iv.2018, ex tree trunks, H.W. Chen, L. Gong, Y. Lin; 1♀ (SCAU, No. 125733, DNA #2188), Botanic Garden, Ruili, Yunnan, 24°04'19''N, 97°49'08''E, alt. 1150m, 22.iv.2018, ex tree trunk, H.W. Chen; 4♂ (SCAU, Nos. 125740–43, DNA #2643, 2744), Menglun, Mengla, Yunnan, 21°47'29''N, 101°22'59''E, alt. 560m, 16,17. iv.2007, ex tree trunks, H.W. Chen, J.J. Gao, F. Zhao.
Distribution. China (Yunnan).
Etymology. From the word " yani " in Hani language from the Hani nationality living in Yunnan, China, referring to the meaning "dreamlike hometown".
description: 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 99-100, DOI: 10.11646/zootaxa.5250.1.1, http://zenodo.org/record/7705657