Stegana (Steganina) convena, Wang & Gao & Chen, 2013

Wang, Le, Gao, Jian-Jun & Chen, Hong-Wei, 2013, Ten new species of the subgenus Steganina (Diptera: Drosophilidae: Stegana) from southern China, Journal of Natural History (J. Nat. Hist.) 47 (29 - 30), pp. 1993-2013 : 1996-1997

publication ID	https://doi.org/ 10.1080/00222933.2012.763055
DOI	https://doi.org/10.5281/zenodo.5197177
persistent identifier	https://treatment.plazi.org/id/038EBF77-FFD6-187A-FE0C-94DBC19DFDD4
treatment provided by	Felipe
scientific name	Stegana (Steganina) convena
status	sp. nov.

Treatment

Stegana (Steganina) convena sp. nov.

( Figure 1 View Figure 1 )

Diagnosis

This species is similar to S. serratoprocessata Chen and Chen, 2009a from southern China in the shapes of 10th sternite and aedeagus, can be differentiated from it by having the cercus lacking pubescence ( Figure 1A View Figure 1 ), the surstylus lacking prensiseta ( Figure 1A View Figure 1 ), the aedeagus sub-basally with two serrated processes per side ( Figure 1C, D View Figure 1 ). In S. serratoprocessata : cercus pubescent and surstylus with one prensiseta on apical margin (as in Chen and Chen 2009a, figs 21, 22); aedeagus with numerous serrated, minute processes submedially (as in Chen and Chen 2009a, figs 24, 25).

Description

Frons brown. Fronto-orbital plate yellow. Pedicel yellow; first flagellomere black. Face black on upper two-thirds, yellow on lower margin. Clypeus yellow. Scutum yellow, with brown patches, and longitudinal stripe: medially broad and sublaterally thin. Basisternum yellow. Scutellum brown medially, yellow along margin. Wing brown anteriorly, yellowish posteriorly, dark brown on all crossveins. Fore femur with one row of four suberect setae on ventral surface. Abdominal tergites first to third mostly dark brown, each with one yellow patch on lateral margin; fourth to sixth mostly yellow, each with dark brown, narrow band along posterior margin. Sternites brown, slightly broader than length. Male terminalia: surstylus distally with numerous serrated, minute processes on outer surface ( Figure 1A View Figure 1 ). Tenth sternite slightly oblong medially ( Figure 1B View Figure 1 ). Hypandrium roundly expanded anteromedially ( Figure 1C View Figure 1 ). Paramere slightly protruded, with ca. four sensilla ( Figure 1C, D View Figure 1 ). Dorsal projection of gonopods with numerous serrated, minute processes ( Figure 1C, D View Figure 1 ). Aedeagus slightly sclerotized posteromedially, protruded apicomedially ( Figure 1D View Figure 1 ); with dense pubescence and numerous serrated processes along anterior margin of opening ( Figure 1C, D View Figure 1 ).

Measurements

BL = 3.67 mm in holotype (range in two ♂ and three ♀ paratypes: 3.32–3.64 in ♂, 3.32–3.80 in ♀), ThL = 1.60 mm (1.24–1.72 in ♂, 1.40–1.44 in ♀), WL = 2.30 mm (2.20–2.88 in ♂, 2.52–2.68 in ♀), WW = 1.17 mm (1.00– 1.40 in ♂, 1.12–1.32 in ♀), arb = 16 / 7 (14–16 / 5–7), avd = 0.70 (0.63–0.88), adf = 1.67 (1.60–2.25), flw = 2.00 (2.00–2.40), FW / HW = 0.52 (0.40–0.49), ch / o = 0.16 (0.17–0.26), prorb = 1.14 (0.67–1.17), rcorb = 0.86 (0.60–0.83), vb = 0.55 (0.42–0.63), dcl = 0.58 (0.38–0.67), presctl = 0.63 (0.56–0.83), sctl = 1.46 (1.39–1.72), sterno = 0.59 (0.59–0.80), orbito = 1.43 (1.67–2.00), dcp = 0.31 (0.21–0.33), sctlp = 2.83 (1.36–1.70), C = 1.55 (1.88–2.08), 4c = 1.47 (0.92–1.72), 4v = 1.80 (1.70–1.83), 5x = 1.80 (1.15–1.80), ac = 22.00 (16.00–18.00), M = 0.93 (0.50–0.68), C3F = 0.65 (0.61–0.73).

Type material

Holotype ♂ ( SCAU, 121115), CHINA: Menglun, Mengla, Xishuangbanna , Yunnan, 21 ◦ 41 ′ N, 101 ◦ 25 ′ E, altitude 700 m, 17–19 April 2007, HW Chen GoogleMaps . Paratypes: two ♂, three ♀ ( SCAU, Nos 121116–20), HW Chen, JJ Gao, same data as holotype GoogleMaps ; one ♂, one ♀ ( KIZ), Wangtianshu, Mengla, Xishuangbanna , Yunnan, 21 ◦ 28 ′ N, 101 ◦ 38 ′ E, altitude 570 m, 30 September 2011, HW Chen, JJ Gao GoogleMaps .