Stegana (Steganina) stachydifolia Li & Zhang & Chen 2019, sp. nov.
Creators: name: Li, Bingxue
name: Zhang, Yuan
name: Chen, Hongwei
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Drosophilidae
Stegana

description: Stegana (Steganina) stachydifolia sp. nov.
(Figs 2F, 9)
Diagnosis. This species resembles S. malanostoma Chen & Chen, 2008 from Hubei, China in the colour patterns of body (Fig. 2F) and some characters of male terminalia (Fig. 9), but can be distinguished by the aedeagus with 1 pair of fringe-like processes ventrally (Fig. 9C, D); gonopods slightly protruded dorsomedially, with a few serrated, minute processes (Fig. 9E, F). The minimum interspecific genetic distance to S. malanostoma is 3.4%, which is smaller than to other species (Table 2).
Description. Male: Frons black on upper half, with 1 yellow band medially, brown below. First flagellomere yellow on basal 2/3, black on distal 1/3. Clypeus black medially, yellow laterally. Palpus yellow, slightly brownish apically. Mesonotum brown medially, yellowish brown laterally (Fig. 2F). Katepisternum entirely white. Scutellum brown (Fig. 2F). Foreleg femur with 4 long suberect setae near distal part of posteroventral surface. Abdominal tergites entirely brown (Fig. 2F). Male terminalia (Fig. 9): Epandrium with ca. 24 setae on dorsal to posterolateral portion per side. Cercus lacking pubescence. Surstylus distally with numerous setulae on inner surface. Paramere with ca. 2 setulae. Aedeagus with numerous, thin setae along apical margin and serration processes on dorsal portion. Gonopods with 1 small projection distodorsally in lateral view.
Measurements. BL = 2.80 mm in holotype (4♂ paratypes: 2.47–2.67), ThL = 1.33 mm (1.11–1.58), WL = 2.20 mm (1.87–2.00), WW = 1.01 mm (0.87–1.00), arb = 7/4 (7/4–8/4), avd = 0.75 (0.50–0.67), adf = 1.60 (1.43– 1.80), flw = 2.4 (1.57–2.20), FW/HW = 0.41 (0.40–0.44), ch/o = 0.10 (0.10–0.12), prorb = 0.94 (0.93–1.07), rcorb = 0.63 (0.71–0.79), vb = 0.30 (0.26–0.36), dcl = 0.48 (0.44–0.63), presctl = 0.40 (0.45–0.53), sctl = 1.60 (1.61– 1.75), sterno = 0.79 (0.75–0.83), orbito = 1.82 (1.50–1.80), dcp = 0.23 (0.22–0.24), sctlp = 2.5 (2.67–3.3), C = 2.06 (2.00–2.07), 4c = 0.89 (0.79–1.07), 4v = 1.42 (1.21–1.79), 5x = 1.16 (1.16–2.00), ac = 8.5 (7.5–8.5), M = 0.37 (0.41–0.43), C3F = 0.71 (0.66–0.84), A = 1.17(1.03–1.17), H = 0.17(0.17–0.22).
Specimens examined. Holotype ♂ (SCAU, No. 121491), China: Yixiang, Pu'er, Yunnan, 22°42'N, 101°09'E, altitude 1400m, 2.x.2011, tree trunk, HW Chen. Paratypes: 3♂ (SCAU, Nos 121492 –94), 13.v.2012, same data as holotype; 1♂ (KIZ, No. 0090662), Guanlei, Mengla, Yunnan, 21°37'39''N, 101°9'55''E, altitude 670m, 14.ix.2012, tussock, JJ Gao; 1♂ (SCAU, No. 124705), Husa, Longchuan, Yunnan, 24°27'37''N, 97°45'9''E, altitude 1227m, 7.ix.2017, tree trunk, HW Chen.
Etymology. From the Greek word: stachydifolius, referring to the aedeagus with 1 pair of fringe-like processes.
Distribution. China (Yunnan).
description: Published as part of Li, Bingxue, Zhang, Yuan & Chen, Hongwei, 2019, Nine new species of the subgenus Stegana (Steganina) from China, with DNA barcoding information (Diptera: Drosophilidae), pp. 81-108 in Zootaxa 4576 (1) on pages 97-98, DOI: 10.11646/zootaxa.4576.1.4, http://zenodo.org/record/2624686