Stegana (Steganina) marenubila Cui & 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 marenubila

description: Stegana (Steganina) marenubila Cui & Chen, sp. nov.
(Figs. 5A, 5B, 21)
Diagnosis. This species resembles S. (S.) crinata Zhang & Chen, 2015 in the shape of epandrium, surstylus, and cercus (as fig. 2 in Zhang & Chen 2015, Fig. 21A), but can be distinguished from the latter by having the aedeagus with 3 pair of basally fused processes: ventral pair small, medial pair slender, and dorsal pair strong (Fig. 21B, C).
Description. Male and female: Frons yellow in male, brown in female. First flagellomere yellow in male, brown in female. Face black, with 1 yellow band medially; facial carina absent. Clypeus black. Palpus mostly yellow. Mesonotum and scutellum yellow in male (Fig. 5A, B), brownish in female. Katepisternum yellowish (Fig.
5B). Halter mostly grey (Fig. 5B). Fore femur with 3 thin, long setae on distal part of posteroventral surface. Abdominal tergites yellow (Fig. 5A, B), 4th to 6th tergites brownish medially in female; sternites yellow, about 2 times as wide as long. Male terminalia (Fig. 21): Epandrium with ca. 8 setae on dorsal to posterior portions per side (Fig. 21A). Surstylus lacking pubescence (Fig. 21A). Cercus with much pubescence (Fig. 21A). Hypandrium slightly expanded anteromedially (Fig. 21B, C). Pregonite blurry or absent (Fig. 21B, C). Junction between hypandrium and aedeagus with 3 sensilla per side (Fig. 21B, C).
Measurements and indices. BL = 2.45 mm in holotype (2.73 in 1♀ paratype), ThL = 1.21 mm (1.19), WL = 2.56 mm (2.75), WW = 0.93 mm (1.12), arb = 7/4 (7/5), avd = 0.73 (0.67), adf = 1.07 (1.21), flw = 1.42 (1.69), FW/ HW = 0.32 (0.37), ch/o = 0.24 (0.24), prorb = 0.96 (0.90), rcorb = 1.20 (0.54), vb = 0.57 (0.46), dcl = 0.28 (1.22), presctl = 0.38 (0.38), sctl = damaged (2.63), sterno = 0.41 (0.46), orbito = 2.22 (1.89), dcp = 0.53 (0.30), sctlp = 1.50 (1.39), C = 2.20 (2.16), 4c = 1.62 (1.02), 4v = 2.49 (1.75), 5x = 1.29 (1.42), ac = 10.75 (8.46), M = 0.93 (0.56), C3F = 0.64 (0.60).
Type materials. Holotype ♂ (SCAU, No. 125411, DNA #2347), CHINA: Manghai, Mangshi, Yunnan, 24°07'03''N, 98°19'04''E, alt. 1720m, 8.xi.2017, ex tree trunk, H.W. Chen. Paratype: 1♀ (SCAU, No. 125412, DNA #2747), other data same as holotype.
Distribution. China (Yunnan).
Etymology. A combination of the Latin words " mare " (= sea) and " nubilus " (= nubilous), referring to the meaning of the type locality (Manghai: a sea of clouds).
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 47-48, DOI: 10.11646/zootaxa.5250.1.1, http://zenodo.org/record/7705657