Stegana (Steganina) curvitabulata Cui & Chen

WANG, YA-LIAN, LI, BING-XUE, CUI, MENG-DI, ZHANG, YUAN, WANG, LE, ZHANG, CAI-HONG, TSAUR, SHUN-CHERN, CHEN, HONG-WEI & HUANG, JIA, 2023, Revision of the subgenus Stegana (Steganina) from China, with assessment of species delimitation using DNA barcodes (Diptera, Drosophilidae), Zootaxa 5250 (1), pp. 1-109 : 65-66

Stegana (Steganina) curvitabulata Cui & Chen , sp. nov.

( Figs. 7G, 7H , 35A–C )

Diagnosis. Eighth sternite broadened, curlied laterally, with dense setae along posterior margin ( Fig. 35B ).

Remarks. The terminalia of the only male specimen was partly damaged (probably eaten by a cockroach) and undescribed.

Description. Male and female: First flagellomere brown. Clypeus brownish medially, yellow laterally. Mesonotum dark brown medially, brownish laterally ( Fig. 7G ). Katepisternum yellowish ( Fig. 7H ). Scutellum dark brown ( Fig. 7G ). Halter mostly grey ( Fig. 7H ). Fore femur with a row of 4 or 5 sturdy setae on distal part of posteroventral surface. Abdominal tergites dark brown to black ( Fig. 7G, H ); sternites brown, about 2 times as wide as long. Female terminalia ( Fig. 35A–C ): Epiproct with several small sensilla, lacking seta and pubescence ( Fig. 35A ). Cercus and hypoproct with numerous setae and much pubescence ( Fig. 35A, C ).

Measurements and indices. BL = 3.31 mm in holotype (2.84 in 1♂ paratype), ThL = 1.61 mm (1.49), WL = 3.13 mm (2.52), WW = 1.26 mm (1.16), arb = 9/5 (9/5), avd = 0.68 (0.83), adf = 1.59 (1.53), flw = 2.59 (2.68), FW/ HW = 0.33 (0.34), ch/o = 0.29 (0.23), prorb = 0.86 (0.91), rcorb = 0.75 (0.62), vb = 0.89 (0.74), dcl = 0.67 (0.63), presctl = 0.79 (0.76), sctl = 1.54 (2.13), sterno = 0.72 (0.91), orbito = 1.74 (1.66), dcp = 0.38 (0.37), sctlp = 1.67 (1.47), C = 1.90 (1.71), 4c = 1.30 (1.06), 4v = 2.06 (1.71), 5x = 1.49 (1.29), ac = 16.83 (10.44), M = 0.74 (0.55), C3F = 0.63 (0.66).

Type materials. Holotype ♀ ( SCAU, No. 125498, DNA #2689), CHINA: Jianfengling, Ledong , Hainan, 18°41'50''N, 108°50'04''E, alt. 750m, 17.iv.2008, ex tussock, J.J. Gao . Paratype: 1♂ ( SCAU, No. 125499, DNA #802), other data same as holotype.

Distribution. China (Hainan).

Etymology. A combination of the Latin words " curvus " (= curved) and " tabulatus " (= plate), referring to the lateally curlied 8th sternite.

Figures

FIGURE 7. Head, thorax, and abdomen in dorsal and lateral views: A, B. Stegana (Steganina) cornuta Li & Chen, sp. nov.; C, D. S. (S.) cucullata Li & Chen, sp. nov.; E, F. S. (S.) cultella Cui & Chen, sp. nov.; G, H. S. (S.) curvitabulata Cui & Chen, sp. nov.; I, J. S. (S.) daiya Cui & Chen, sp. nov.

FIGURE 35. Female terminalia in Stegana (Steganina) curvitabulata Cui & Chen, sp. nov. (A–C) and S. (S.) daiya Cui &