Stegana (Steganina) longifibula Takada, 1968

Li, Bingxue, Zhang, Yuan & Chen, Hongwei, 2019, Nine new species of the subgenus Stegana (Steganina) from China, with DNA barcoding information (Diptera: Drosophilidae), Zootaxa 4576 (1), pp. 81-108 : 88-89

Stegana (Steganina) longifibula Takada, 1968

( Fig. 3 )

Stegana (Steganina) longifibula Takada, 1968: 123 .

Diagnosis. Surstylus acute apically, with 2 minute projections ( Fig. 3A ); aedeagus concave medially in lateral view ( Fig. 3C ); gonopods nearly triangular in ventral view ( Fig. 3D ).

Description. Male: Frons black. First flagellomere greish yellow. Clypeus and palpus yellow. Mesonotum brown to dark brown, with 1 thin, yellow longitudinal stripe medially, yellowish brown laterally. Katepisternum entirely white. Scutellum black. Femur of foreleg with 4 long erect setae near distal part of posteroventral surface. Abdominal tergites dark brown to black medially, brown to dark brown laterally. Male terminalia ( Fig. 3 ): Epandrium slightly protruded ventrally, with ca. 30 setae on posterior portion per side. Surstylus with numerous setulae distally. Cercus lacking pubescence. Paramere with 2 setulae. Tenth sternite convex dorsolaterally.

Measurements. BL = 2.90–3.02 mm in 5♂, ThL = 1.26–1.35 mm in ♂, WL = 2.66–3.02 mm in ♂, WW = 1.13–1.21 mm in ♂, arb = 3–4/4–6, avd = 0.61–0.67, adf = 1.21–1.42, flw = 1.74–2.00, FW/HW = 0.36–0.37, ch/o = 0.22–0.25, prorb = 0.29–0.30, rcorb = 0.65–0.83, vb = 0.58–0.72, dcl = 0.57–0.59, presctl = 0.65–0.68, sctl = 1.27–1.30, sterno = 1.29–1.30, orbito = 1.57–1.95, dcp = 0.28–0.30, sctlp = 1.59–1.64, C = 2.09–2.23, 4c = 0.90– 1.00, 4v = 1.50–1.70, 5x = 1.32–1.69, ac = 6.40–7.77, M = 0.41–0.47, C3F = 0.58–0.61.

Specimens examined. China: 1♂ ( SCAU, No. 110905), Gangshan Forest Park, Xinbin , Liaoning, 41°37'07''N, 125°24'03''E, altitude 539m, 15.vii.2018, tree trunk, Y Lin ; 2♂ ( SCAU, Nos 110906, 07), Green Stone Valley Forest Park, Benxi , Liaoning, 41°04'09''N, 124°12'12''E, altitude 570m, 17.vii.2018, tussock, L Gong ; 2♂ ( SCAU, Nos 110908, 09), Dayangcha, Kuandian , Liaoning, 124°7'01''E, 41°1'48''N, altitude 485m, 23.vii.2018, tree trunk, BX Li .

Distribution. China * (Liaoning), Russia (Far East, Europan), Japan (Hokkaido, Honshu), Finland.

Figures

FIGURE 3. Stegana (Steganina) longifibula Takada, 1968, male terminalia: A. Epandrium (epand), surstylus (sur) and cercus (cerc) (lateral view); B, C. Hypandrium (hypd), parameres (pm), aedeagus (aed) and aedeagal apodeme (aed a) (ventral and lateral views); D, E. Gonopods (ventral and lateral views); F. Tenth sternite (ventral view). Scale lines = 0.1 mm.