Stegana (Steganina) monodonata Chen & Chen, 2008, sp. nov.
Creators: name: Chen, Xi-Peng
name: Chen, Hong-Wei
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Drosophilidae
Stegana
Stegana monodonata

description: Stegana (Steganina) monodonata sp. nov.
(Figs 7–12)
Specimens examined. Holotype ɗ (SCAU, No. 120296): CHINA – labeled “Mt. Ailao, Jingdong, Simao, Yunnan, 24°32 N, 101°01' E, 2450 m a.s.l., 27.vii.2006, on tree trunk, T. Li”.
Etymology. A combination of the Greek words “monos + odontos”, referring to the surstylus with 1 small prensiseta apically.
Diagnosis. Gonopods nearly quadrate and flat at dorsal margin, with 1 small projection on posterior surface (Fig. 12); 10th sternite broadly bilobed (Fig. 9).
Description. Some characters commonly seen in S. melanostoma sp. nov. are not referred to in the following description. Male: Clypeus black medially, yellow laterally. Palpus entirely yellow. Legs white to yellowish, dark brown at fore knees, distal half of mid femur and basal half of mid tibia, distal 1/3 of hind femur and basal 1/3 of hind tibia. Male terminalia: Epandrium with ca. 21 setae on dorsal to posterolateral portion per side (Fig. 7). Paramere with ca. 3 setulae (Figs. 10, 11). Aedeagus subbasally expanded in ventral view and with several serration processes, with dense, thin tentacle-like setae along apical margin (Figs. 10, 11).
Measurements. BL = 2.87 mm; ThL = 1.32 mm; WL = 2.84 mm; WW = 1.13 mm. Indices: arb = 5/4, avd = 0.60, adf = 1.25, flw = 1.91, FW/HW = 0.47, ch/o = 0.15, prorb = 1.14, rcorb = 0.82, vb = 0.43, dcl = 0.44, presctl = 0.47, sctl = damaged, sterno = 0.80, orbito = 1.83, dcp = 0.23, sctlp = 1.53, C = 1.89, 4c = 0.91, 4v = 1.40, 5x = 1.37, ac = 10.33, M = 0.42, C3F = 0.66.
Distribution. China (Yunnan).
Stegana (Steganina) pililobosa sp. nov. (Figs 13–18)
Specimens examined. Holotype ɗ (SCAU, No. 120294): CHINA – labeled “Shennongjia, Hubei, 1700 m a.s.l, 1.viii.2005, on tree trunk, H.W. Chen”. Paratype: 1ɗ, same data as holotype (SCAU, No. 120295).
Etymology. A combination of the Greek words “pilos + lobos”, referring to the medial flaps of hypandrium with pubescence.
Diagnosis. Tentn sternite and medial flaps of hypandrium (Hu & Toda 1994; fused gonopods in Bächli et al. 2004) pubescent (Figs. 15, 16); aedeagus not expanded medially in ventral view (Fig. 16).
Description. Some characters commonly seen in S. melanostoma sp. nov. are not referred to in the following description. Male: Clypeus almost yellow, darkened medially. Palpus entirely yellow. Legs white to yellowish, dark brown at fore knees, distal half of mid femur and basal half of mid tibia, distal 1/3 of hind femur and basal 1/3 of hind tibia. Abdominal tergites black. Male terminalia: Epandrium with ca. 34 setae on dorsal to posterolateral portion per side (Fig. 13). Surstylus distally with numerous setae on outer and inner surfaces (Fig. 14). Tenth sternite strongly sclerotized, roundly protruded dorsally (Fig. 15). Gonopods vaulted, with 1 small medial projection on posterior surface (Fig. 18). Aedeagus with orderly tentacle-like setae along apical margin (Figs. 16, 17).
Measurements. BL = 2.48 mm (1ɗ paratype 2.53 mm); ThL = 1.66 (1.52 mm); WL = 3.06 (2.53 mm); WW = 1.28 (1.03 mm). Indices: arb = 8/5 (8/5), avd = 0.69 (0.67), adf = 1.33 (1.25), flw = 1.91 (1.83), FW/ HW = 0.52 (0.49), ch/o = 0.21 (0.18), prorb = damaged (1.25), rcorb = damaged (0.75), vb = 0.50 (0.48), dcl = 0.63 (0.55), presctl = 0.83 (0.68), sctl = 1.50 (1.42), sterno = damaged, orbito = 1.55 (2.00), dcp = 0.26 (0.24), sctlp = 1.82 (1.79), C = 1.88 (1.82), 4c = 1.20 (1.10), 4v = 1.85 (1.77), 5x = 1.25 (1.09), ac = 12.00 (11.33), M = 0.50 (0.39), C3F = 0.76 (0.69).
Distribution. China (Hubei).
description: Published as part of Chen, Xi-Peng & Chen, Hong-Wei, 2008, The Stegana coleoptrata species group (Diptera: Drosophilidae) from mainland China, pp. 55-65 in Zootaxa 1891 on pages 58-60, DOI: 10.5281/zenodo.184336