Stegana (Steganina) hirticeps, 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 : 2002-2003

Stegana (Steganina) hirticeps sp. nov.

( Figure 5 )

Diagnosis

This species is similar to S. rhomboica sp. nov. in the cercus lacking pubescence, the shapes of paramere and aedeagus, can be differentiated from it by having the surstylus with serrated, minute processes on outer surface ( Figure 5A ), the dorsal projection of

gonopods globosely expanded ( Figure 5D, E ), the aedeagal opening with pubescence medially and apically ( Figure 5C, D ).

Description

Frons dark brown, lacking minute setulae. Fronto-orbital plate yellow above, brown below. Pedicel and first flagellomere mostly brown. Face black on upper two-thirds, yellow on lower margin. Clypeus yellow. Scutum medially brown in male and dark female, laterally yellow. Basisternum yellow. Scutellum brown, sometimes slightly yellow at tip. Wing brown anteriorly, yellowish posteriorly, black on all crossveins. Fore femur with one row of five long, suberect setae on ventral surface. Abdominal tergites dark brown medially, yellow laterally. Sternites brown, slightly wider than length. Male terminalia: surstylus lacking prensiseta ( Figure 5A ). Tenth sternite strongly broadened ( Figure 5B ). Hypandrium roundly expanded anteromedially ( Figure 5C ). Paramere protruded and with one sensillum ( Figure 5C, D ). Aedeagus roundly expanded distally, lacking serrated, minute processes ( Figure 5C, D ).

Measurements

BL = 2.80 mm in holotype (3.04 in one ♀ paratype), ThL = 1.28 mm (1.36), WL = 2.52 mm (2.56), WW = 1.24 mm (1.28), arb = 7 / 5 (6 / 4), avd = 0.80 (1.00), adf = 0.83 (0.80), flw = 2.50 (2.00), FW / HW = 0.31 (0.30), ch / o = 0.26 (0.31), prorb = 1.08 (1.07), rcorb = 0.67 (0.60), vb = 0.38 (0.50), dcl = 0.29 (0.47), presctl = 0.59 (0.68), sctl = 1.93 (2.00), sterno = 0.65 (0.88), orbito = 1.80 (1.60), dcp = 0.20 (0.21), sctlp = 3.00 (1.70), C = 1.78 (2.60), 4c = 1.38 (1.07), 4v = 2.15 (1.86), 5x = 1.33 (1.60), ac = 18.00 (15.00), M = 0.62 (0.57), C3F = 0.67 (0.69).

Type material

Holotype ♂ ( SCAU, No. 121203) and paratypes one ♂, two ♀ ( SCAU, No. 121204–06), CHINA: Mount Maoer, Guilin , Guangxi, 25 ◦ 51 ′ N, 110 ◦ 27 ′ E, altitude 700 m, 23 October 2004, HW Chen.

Etymology

A combination of the Latin words: hirtus + ceps referring to the aedeagal opening with dense pubescence.

Distribution

China (Guangxi).

Figures

Figure 5. Stegana (Steganina) hirticeps sp. nov., male terminalia: (A) epandrium, cercus and surstylus; (B) 10th sternite; (C, D) hypandrium, paramere(s), aedeagus and aedeagal apodeme; (E) gonopods. Scale bars: 0.1 mm.