Stegana (Steganina) daiya 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 : 66

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

( Figs. 7I, 7J , 35D–F )

Diagnosis. Eighth sternite broadened, rounded distally, with several sensilla, setae, and some pubescence distolaterally ( Fig. 35E ).

Description. Female: Clypeus brownish. Mesonotum dark brown medially, brown laterally ( Fig. 7I, J ). Katepisternum yellow, slightly greyish below ( Fig. 7J ). Scutellum black ( Fig. 7I ). Halter mostly grey. Fore femur with a row of 3 long setae on distal part of posteroventral surface. Abdominal tergites mostly black ( Fig. 7I, J ); sternites brownish, slightly wider than long. Female terminalia ( Fig. 35D–F ): Epiproct with several setae, lacking pubescence ( Fig. 35D ). Cercus with numerous setae and much pubescence ( Fig. 35D ). Hypoproct with numerous setae and much pubescence posteriorly ( Fig. 35F ).

Measurements and indices. BL = 2.77 mm in holotype (2.81 in 1♀ paratype), ThL = 1.41 mm (1.45), WL = 2.67 mm (2.79), WW = 1.34 mm (1.28), arb = 6/4 (7/5), avd = 0.72 (0.86), adf = 0.77 (0.82), flw = 1.80 (1.67), FW/ HW = 0.40 (0.41), ch/o = 0.39 (0.47), prorb = 1.47 (1.42), rcorb = 1.16 (0.96), vb = 0.50 (1.06), dcl = 0.88 (0.56), presctl = 0.59 (0.56), sctl = 0.91 (1.14), sterno = damaged (0.76), orbito = 2.07 (2.00), dcp = 0.19 (0.18), sctlp = 1.17 (1.49), C = 1.93 (2.09), 4c = 1.30 (1.40), 4v = 2.23 (2.49), 5x = 2.07 (2.00), ac = 9.33 (9.46), M = 0.72 (0.76), C3F = 0.66 (0.72).

Type materials. Holotype ♀ ( SCAU, No. 125608, DNA #2565), CHINA: Fengtongzhai, Baoxing , Sichuan, 30°32'42''N, 102°54'24''E, alt. 1700m, 19.ix.2005, ex tussock, H.W. Chen . Paratype: 1♀ ( SCAU, No. 125609, DNA #547), other data same as holotype.

Distribution. China (Sichuan).

Etymology. From the word " daiya " in Qiang language from the Qiang nationality living in Sichuan, China, referring to the meaning "a mysterious place".

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 &