Stegana (Steganina) albiventralis Cheng, Gao &amp; Chen, 2009, sp. nov.
Creators: name: Cheng, Yu
name: Gao, Jian-Jun
name: Chen, Hong-Wei
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Drosophilidae
Stegana
Stegana albiventralis

description: <i>Stegana</i> (<i>Steganina</i>) <i>albiventralis</i> sp. nov. (Figs 1–6) <b>Specimens examined.</b> Holotype: &amp;male; (SCAU, No. 120589), CHINA: Ailaoshan, Jingdong, Simao, Yunnan, 24°50ʹ N, 100°48ʹ E, altitude 2400 m, 31.vii.2006, on tree trunks, HZ Cao. Paratypes: CHINA: 6&amp;male; (SCAU, Nos 120590-95), same data as holotype; 7&amp;male; 6&amp;female; (SCAU, Nos 120596-0608), Wuliangshan, Nanjian, Dali, Yunnan, 24°28ʹ N, 100°40ʹ E, altitude 2200 m, 27–28.vii.2006, on tree trunks, HL Cao, HZ Cao, T Li; 15&amp;male; 11&amp;female; (5&amp;male; 5&amp;female; in KIZ; 8&amp;male; 4&amp;female; in SCAU, Nos 120609-0620; 2&amp;male; 2&amp;female; in SEHU), Wuliangshan, Jingdong, Simao, Yunnan, 24°31ʹ N, 101°40ʹ E, altitude 2230 m, 4,5. viii.2006, on tree trunks, HL Cao, HZ Cao, T Li. <b>Diagnosis.</b> Palpus entirely yellow; katepisternum entirely white; aedeagus divided into several slender, rod-like processes from base (Fig. 4). <b>Description.</b> Male and female: Pedicel and first flagellomere brown. Mesonotum brown, with yellow stripe medially. Scutellum black. Legs white-yellow, black on all knee joints and basal part of all 1st tarsomeres. Fore femur with 4 setae on distal part of ventral surface. All abdominal tergites dark brown to black. Sternites yellow. Male terminalia: Epandrium with approximately 14 setae near posterior margin on each body-side (Fig. 1). Cercus with sporadic pubescence (Fig. 1). Plate between hypandrium and aedeagus lacking pubescence (Fig. 4). <b>Measurements.</b> BL = 2.56 mm in holotype (range in 4&amp;male; 5&amp;female; paratypes: 2.72–3.09 mm in &amp;male;, 2.88–3.16 mm in &amp;female;); ThL = 1.47 mm (1.34–1.53 mm in &amp;male;, 1.56–1.69 mm in &amp;female;); WL = 2.84 mm (2.38–2.91 mm in &amp;male;, 2.75–3.03 mm in &amp;female;); WW = 1.44 mm (1.26–1.44 mm in &amp;male;, 1.40–1.42 mm in &amp;female;). Indices: arb = 7/6 (6–7/6–7), avd = 0.77 (0.67–0.80), adf = 1.08 (0.93–1.29), flw = 1.58 (1.50–1.64), FW/HW = 0.42 (0.38–0.40), ch/o = 0.09 (0.08–0.09), prorb = 1.08 (1.04–1.19), rcorb = 0.72 (0.69–0.81), vb = 0.25 (0.21–0.28), dcl = 0.51 (0.36– 0.42), presctl = 0.67 (0.47–0.63), sctl = 1.34 (1.25–1.51), sterno = 0.92 (0.89–0.98), orbito = 2.14 (2.00–2.50), dcp = 0.25 (0.18–0.23), sctlp = 1.04 (1.12–1.48), C = 2.10 (1.90–2.10), 4c = 1.14 (1.08–1.27), 4v = 1.66 (1.63–1.79), 5x = 1.29 (1.29–1.54), ac = 10.00 (9.00–10.50), M = 0.51 (0.50–0.59), C3F = 0.63 (0.51–0.71). <b>Distribution.</b> China (Yunnan). <b>Etymology.</b> A combination of the Latin words: albulus and ventriculus, referring to the mesopleuron white below black longitudinal stripe.
description: Published as part of <i>Cheng, Yu, Gao, Jian-Jun &amp; Chen, Hong-Wei, 2009, Stegana ornatipes species group from the Oriental Region (Diptera: Drosophilidae), pp. 37-48 in Zootaxa 2216 (1)</i> on pages 40-41, DOI: 10.11646/zootaxa.2216.1.3, http://zenodo.org/record/5321864