Pseudostegana insularis, Li & Gao & Chen, 2010

Li, Tong, Gao, Jianjun & Chen, Hongwei, 2010, Six new species of the genus Pseudostegana (Diptera: Drosophilidae) from the Oriental region, Journal of Natural History 44 (23 - 24), pp. 1401-1418 : 1414-1416

publication ID	https://doi.org/ 10.1080/00222931003679584
persistent identifier	https://treatment.plazi.org/id/03D55018-3767-FF9A-FE57-679D3D0607DD
treatment provided by	Felipe
scientific name	Pseudostegana insularis
status	sp. nov.

Treatment

Pseudostegana insularis View in CoL sp. nov.

( Figures 1I,J View Figure 1 ; 2E View Figure 2 ; 7 View Figure 7 )

Diagnosis

Paramere nearly entirely black, apically slightly bifurcated ( Figure 7D,E View Figure 7 ); aedeagus slender distally, expanded dorsomedially in lateral view ( Figure 7E View Figure 7 ).

Description

Only important characters are described here.

Head. Ocellar and frons brown. Pedicel brown; first flagellomere greyish yellow on basal two-thirds, greyish black on distal one-third. Face brownish yellow. Clypeus black. Gena yellow. Palpus greyish brown, broadened in male, medially one-third as wide as long.

Thorax. Scutum yellow. Pleura glossy brown on upper part, black on lower part. Katepisternal setae two. Scutellum yellow.

Legs

Yellow, black on hind tibia.

Abdomen. Tergites mostly glossy, black. Sternites brown.

Male terminalia. Epandrium slightly roundly protruded on ventral margin, with about 18 setae ( Figure 7A View Figure 7 ). Surstylus slightly protruded on posteroventral corners, with several setae on outer surface ( Figure 7A,B View Figure 7 ). Cercus ventrally elongated in lateral view ( Figure 7A View Figure 7 ). Aedeagus apically round in ventral and lateral views ( Figure 7D,E View Figure 7 ). Basal process of aedeagus slender ( Figure 7D,E View Figure 7 ).

Measurements

BL = 2.75 mm in holotype (range in three female paratypes: 2.59–3.28 mm), ThL = 1.32 mm (1.05–1.28 mm), WL = 2.56 mm (2.04–2.40 mm), WW = 1.22 mm (0.92–1.16 mm), arb = 8/1 (6/1–7/1), avd = 0.80 (0.71–1.00), adf = 2.50 (1.63–2.13), flw = 2.75 (2.20–2.63), FW/HW = 0.39 (0.41–0.48), ch/o = 0.08 (0.07–0.10), prorb = damaged (0.80–0.92), vb = 0.50 (0.55–0.75), dcl = 0.28 (0.24–0.29), sctl = damaged (0.92–1.36), sterno = 0.75 (0.64–0.74), orbito =0.75 (0.52–0.60), dcp = 0.21 (0.16–0.25), sctlp = 1.25 (1.16–1.25), C = 1.94 (1.76–1.96), 4c = 1.71 (1.50–1.75), 4v = 3.30 (3.10–3.30), 5x = 1.07 (1.00–1.40), ac = 12.8 (12.4–15.0), M = 0.71 (0.58–0.70), C3F = 0.83 (0.76–0.80).

Type material

Holotype male ( SCAU, No. 120556), China: Mount Jianfengling, Ledong , Hainan, 18°41′ N, 108°52′ E, altitude 800 m, 16 May 2005, swept over fallen logs and fruits, M.F. Xu GoogleMaps . Paratypes: two females ( SCAU, Nos. 120557, -58), same data as for holotype GoogleMaps ; one male and one feamle ( SCAU, Nos. 120559, -60), Mount Atuoling , Hainan, 18°20′ N, 109°22′ E, altitude 550 m, 20 April 2007, swept over fallen logs, T. Li GoogleMaps .