Nine new species of the subgenus Stegana (Oxyphortica) from the Oriental region, with morphological and molecular evidence based on Chinese species (Diptera: Drosophilidae) Author Wang, Nannan Author Zhang, Yuan Author Cheng, Yu Author Chen, Hongwei text Journal of Natural History 2017 2017-09-14 51 33 - 34 1943 1970 http://dx.doi.org/10.1080/00222933.2017.1360960 journal article 10.1080/00222933.2017.1360960 1464-5262 5182851 2FA403F6-5535-40A4-9FD0-ADB9913EDE83 Stegana ( Oxyphortica ) chuanjiangi Zhang and Chen , sp. nov. (Figures 2(f), 4(b), 5(g) and 8). Figure 7. Stegana (Oxyphortica) maichouensis Sidorenko,1998 , male terminalia. (a) epandrium, cercus and surstylus (lateral view); (b) surstylus (ventral view); (c, d) hypandrium, aedeagus and aedeagal apodeme (ventral and lateral views); (e) gonopods. Scale lines = 0.1 mm. Diagnosis Aedeagus strongly broadened mediolaterally, wider than long, not bifid apically ( Figure 8 (c, d)). The 3.9% interspecific genetic distance to S . ( O ). dawa sp. nov. is one of the smallest interspecific distances ascertained within this subgenus; see under that species. Description Clypeus brownish yellow. Palpus yellow. Mesoscutum yellow medially, with two pairs of broad, brown to dark brown longitudinal stripes sublaterally ( Figure 4 (b)). Scutellum brown to dark brown medially, yellow along margin ( Figure 4 (b)). Katepisternum yellow, slightly brownish anteriorly. Wing greyish basally, greyish brown distally, posterior crossvein and neighbouring longitudinal veins darkened (Figure 2(f)). Abdominal tergites: 1st yellow; 2nd and 3rd yellow medially, dark brown posterolaterally, anteromedially with one small brownish patch on 2nd; 4th to 6th tergites mostly dark brown, yellow along anterior margins, with brownish yellow to yellow longitudinal stripes medially ( Figure 5 (g)). Male terminalia: Epandrium nearly rectangular on posterolateral corners, with dense pubescence and setae ( Figure 8 (a)). Cercus lacking pubescence ( Figure 8 (a)). Surstylus small lobe-shaped, only with several setae distally ( Figure 8 (a, b)). Parameres absent ( Figure 8 (c, d)). Aedeagus dorsally sclerotized, apically slightly curved ventrad in lateral view, with sparse pubescence ventrally and one pair of small projections above peristome, slightly expanded outward on both sides of peristome ( Figure 8 (c, d)). Gonopods broadened to hood-shaped, not bilobed apically ( Figure 8 (e)). Figure 8. Stegana (Oxyphortica) chuanjiangi Zhang and Chen , sp. nov. , male terminalia. (a) epandrium, cercus and surstylus (lateral view); (b) surstylus (ventral view); (c, d) hypandrium, aedeagus and aedeagal apodeme (ventral and lateral views); (e) gonopods. Scale lines = 0.1 mm. Measurements BL = 3.00 mm in holotype (range in five males and five females paratypes : 2.73–3.69 mm in males, 3.87–4.36 mm in females), ThL = 1.40 mm ( 1.33–1.73 mm in males, 1.42– 1.78 mm in females), WL = 2.70 mm ( 2.63–3.10 mm in males, 3.33–3.56 mm in females), WW = 1.13 mm ( 1.20–1.33 mm in males, 1.38–1.60 mm in females), arb = 4/3 (4–6/3–4), avd = 0.71 (0.67–1.00), adf = 2.00 (1.63–3.00), flw = 2.43 (1.83–2.60), FW/HW = 0.37 (0.34– 0.47), ch/o = 0.12 (0.09–0.13), prorb = 0.89 (0.75–1.12), rcorb = 0.68 (0.57–0.78), vb = 0.62 (0.45–0.62), dcl = 0.52 (0.46–0.58), presctl = 0.48 (0.41–0.50), sctl = 1.11 (1.00–1.27), sterno = 0.89 (0.81–0.96), orbito = 1.60 (1.29–2.00), dcp = 0.27 (0.21–0.37), sctlp = 1.00 (0.82–1.08), C = 2.78 (2.62–3.06), 4c = 0.74 (0.73–0.82), 4v = 1.70 (1.50–1.86), 5x = 1.38 (1.22–1.57), ac = 5.67 (5.00–6.67), M = 0.48 (0.42–0.55), C3F = 1.00 (1.00). Type specimens Holotype male ( SCAU , No. 121037), China : Hesong , Menghai , Yunnan , 21°49 ʹ N , 100°06 ʹ E , altitude 1750–1900 m , 17 April 2010 , ex tussock, JJ Gao . Paratypes : China : 24 males , 18 females ( six males , five females in KIZ , Nos. 0088137–47; 18 males , 13 females in SCAU , Nos. 121038– 52, 121479–94), 17 April 2010 , 27 March 2011 , 7 April 2011 , 7–12 May 2012 , same data as holotype, HW Chen , JJ Gao , JM Lu , ZF Shao , YR Su , L Wang , L Wu , SJ Yan , CJ Zhou ; four females ( SCAU , Nos. 121053–56), Wangtianshu , Mengla , Yunnan , 21°28 ʹ N , 101°38 ʹ E , altitude 570 m , 22–24 April 2007 , ex tussock, HW Chen , JJ Gao ; two females ( SCAU , Nos. 121057, 58), Wuliangshan, Jingdong, Yunnan , 24°32 ʹ N , 101°01 ʹ E , altitude 1450 m , 5 August 2006 , ex tussock, T Li; four males , three females ( SCAU , Nos. 122024–30), Baihualing, Baoshan, Yunnan , 25°27′N , 98°52′E , altitude 1400 m , 14 June 2011 , 24 August 2013 , ex tussock, HW Chen , JJ Gao , QS Gao ; three males , three females ( SCAU , Nos. 124813–15, 111311–13), Mengdong , Cangyuan , Yunnan , 23°10′8 ʹ ’N, 99°13′52 ʹ ’E, altitude 1300 m , 6–10 May 2016 , ex tussock, J Huang , YQ Liu , YL Wang ; two males , one female ( SCAU , Nos. 123016–18), Nanling , Lincang , Yunnan , 22°47 ʹ 57 ʹ ’N, 99°55 ʹ 11 ʹ ’E, altitude 1860 m , 12 August 2016 , ex tussock, HW Chen , L Gong . Etymology Patronym after Dr Chuanjiang Zhou ( Henan Normal University), who helped us many times in the field. Distribution China ( Yunnan ).