Stegana (Steganina) hirtifoliacea, 2019

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 : 99-100

Stegana (Steganina) hirtifoliacea sp. nov.

( Figs 2G , 10 )

Diagnosis. This species resembles S. unguiculata sp. nov. in the colour patterns of body ( Fig. 2G ) and male terminalia ( Fig. 10 ), but can be distinguished by the aedeagus with 4 short and thick processes per side ( Fig. 10C ); sublateral processes of gonopods shorter and broadly separated than in S. unguiculata sp. nov. ( Fig. 10D ). The minimum interspecific genetic distance to S. unguiculata is 3.3%, which is smaller than to other species ( Table 2); see description of S. unguiculata for more detail.

Description. Male: Pedicel yellow medially, black laterally; first flagellomere nearly black. Palpus yellow basally, brown on distal 1/ 3 in male. Mesonotum brown ( Fig. 2G ). Katepisternum dark brown on upper part, whiteyellow on lower part ( Fig. 2G ). Scutellum black ( Fig. 2G ). Legs dark brown to black, yellow on basal part of fore femora and 2nd to 5th tarsomeres. Fore femur with 3 long setae on distal half of posteroventral surface. All abdominal tergites brown ( Fig. 2G ); all sternites yellowish brown. Male terminalia ( Fig. 10 ): Epandrium with ca. 20 setae near posterior portion per side. Surstylus broad in lateral view. Cercus lacking pubescence. Tenth sternite with 1 pair of asymmetric projections sublaterally. Paramere with ca. 2 sensilla. Aedeagus with pubescence. Gonopods with 1 suberect lobe-like process bearing several pubescence.

Measurements. BL = 2.80 mm in holotype (1♂ paratype: 2.75), ThL = 1.13 mm (1.26), WL = 2.00 mm (2.65), WW = 1.00 mm (1.21), arb = 6/5 (5/4), avd = 0.60 (0.84), adf = 1.43 (1.02), flw = 1.57 (1.90), FW/HW = 0.31 (0.40), ch/o = 0.13 (0.11), prorb = 1.07 (0.90), rcorb = 0.60 (0.62), vb = 0.25 (0.27), dc1 = damaged (damaged), presct1 = 0.50 (damaged), sct1 = 1.59 (damaged), sterno = damaged (0.87), orbito = 2.25 (1.91), dcp = 0.24 (0.25), sct1p = 1.08 (1.15), C = 2.00 (2.19), 4c = 1.13 (1.42), 4v = 1.57 (1.82), 5x = 1.33 (1.13), ac = 9.00 (7.47), M = 0.50 (0.62), C3F = 0.71 (0.58).

Specimens examined. Holotype ♂ ( SCAU, No. 124706), China: Dashuigou, Lüchun , Yunnan, 22°57'19''N, 101°57'4''E, altitude 1310m, 2.viii.2016, tussock, HW Chen . Paratype: China: 1♂ ( SCAU, No. 124709), Mengma, Menglian , Yunnan, 22°12'59''N, 99°22'51''E, altitude 1070m, 15.iv.2018, tree trunk, HW Chen .

Etymology. A combination of the Latin words: hirtus + foliaceus, referring to the aedeagus with several setae.

Distribution. China (Yunnan).

Figures

FIGURE 2. Habitus. A. Stegana (Steganina) toyaensis Okada & Sidorenko, 1992; B–J in holotype: B. Stegana (Steganina) latitabula sp. nov.; C. Stegana (Steganina) panda sp. nov.; D. Stegana (Steganina) pinguifoliacea sp. nov.; E. Stegana (Steganina) spatulata, sp. nov.; F. Stegana (Steganina) stachydifolia, sp. nov.; G. Stegana (Steganina) hirtifoliacea sp. nov.; H. Stegana (Steganina) unguiculata sp. nov.; I. Stegana (Steganina) biflava sp. nov.; J. Stegana (Steganina) flavivittata sp. nov.

FIGURE 10. Stegana (Steganina) hirtifoliacea sp. nov., male terminalia: A. Epandrium, surstylus and cercus (lateral view); B. Surstylus (inner view); C. Hypandrium, parameres, aedeagus and aedeagal apodeme (ventral view); D. Gonopods (ventral view); G. Tenth sternite (ventral view). Scale lines = 0.1 mm.