Stegana (Steganina) rava 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 : 93-94

publication ID	https://doi.org/ 10.11646/zootaxa.5250.1.1
publication LSID	lsid:zoobank.org:pub:4729EAF3-8B78-4AAD-B373-9179D008F239
DOI	https://doi.org/10.5281/zenodo.7705616
persistent identifier	https://treatment.plazi.org/id/0393914C-2A7E-8725-C282-FB7468A5FBBB
treatment provided by	Plazi
scientific name	Stegana (Steganina) rava Cui & Chen
status	sp. nov.

Treatment

Stegana (Steganina) rava Cui & Chen View in CoL , sp. nov.

( Figs. 13A, 13B View FIGURE 13 , 58 View FIGURE 58 )

Diagnosis. This species is similar to S. (S.) flavipes sp. nov. in the shape of male terminalia ( Figs. 38 View FIGURE 38 , 58 View FIGURE 58 ), but can be distinguished from the latter by having the surstylus laterally with some minute, serrated processes ( Fig. 58A, B View FIGURE 58 ); the aedeagus with some pubescence distoventrally ( Fig. 58C, D View FIGURE 58 ); the subepandrial sclerite vaulted ( Fig. 58G View FIGURE 58 ).

Description. Male: First flagellomere brown. Clypeus yellow. Mesonotum yellow ( Fig. 13A View FIGURE 13 ). Katepisternum yellowish ( Fig. 13B View FIGURE 13 ). Scutellum yellow, brownish near distal margin ( Fig. 13A View FIGURE 13 ). Halter mostly brownish ( Fig. 13B View FIGURE 13 ). Fore femur with 4 thin, long setae on distal part of posteroventral surface. Abdominal tergites brownish ( Fig. 13A, B View FIGURE 13 ); sternites yellow, about 1.6 times as wide as long. Male terminalia ( Fig. 58 View FIGURE 58 ): Epandrium with ca. 8 setae on dorsal to posterior portions per side ( Fig. 58A View FIGURE 58 ). Surstylus slightly oval, with some setulae along distal margin and inner surface, lacking pubescence ( Fig. 58A, B View FIGURE 58 ). Cercus with sparse pubescence ( Fig. 58A View FIGURE 58 ). Hypandrium expanded anteromedially ( Fig. 58C, D View FIGURE 58 ). Pregonite small, with 2 sensilla ( Fig. 58C, D View FIGURE 58 ). Aedeagus tubular, distally slightly expanded, distoventrally with 3 rugae per side, lacking serrated process ( Fig. 58C, D View FIGURE 58 ). Aedeagal sheath small, lacking serrated process ( Fig. 58E, F View FIGURE 58 ).

Measurements and indices. BL = 2.67 mm in holotype, ThL = 1.15 mm, WL = 2.32 mm, WW = 1.01 mm, arb = 6/5, avd = 0.76, adf = 0.93, flw = 1.76, FW/HW = 0.37, ch/o = 0.28, prorb = 0.87, rcorb = 0.68, vb = 0.60, dcl = 0.61, presctl = 0.80, sctl = 2.10, sterno = 0.76, orbito = 1.67, dcp = 0.21, sctlp = 1.51, C = 1.66, 4c = 1.07, 4v = 1.63, 5x = 1.23, ac = 9.27, M = 0.52, C3F = 0.62.

Type material. Holotype ♂ ( SCAU, No. 125656, DNA #2705), Menglun, Mengla , Yunnan , 21°47'29''N, 101°22'59''E, alt. 560m, 16,17. iv.2007, ex tree trunk, H.W. Chen. GoogleMaps

Distribution. China (Yunnan).

Etymology. From the word " rava " in Dai language from the Dai nationality living in Yunnan, China, referring to the meaning "a happy place".