Stegana (Steganina) izu Sidorenko, 1997

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 : 51-52

Stegana (Steganina) izu Sidorenko, 1997

( Fig. 24 )

Stegana (Steganina) izu Sidorenko, 1997b: 167 .

Remarks. The male specimens from Ryukyu Islands, Japan slightly differ from the type materials from Izu Islands , Japan in the distal shape of aedeagus and aedeagal sheath (as figs. 4–7 in Sidorenko 1997b, Fig. 24C–F ). They were conservatively identified as conspecific.

Description. Female terminalia (Fig. 24H–J): Epiproct with several setae, lacking pubescence (Fig. 24H). Cercus with numerous setae and much pubescence (Fig. 24H). Eighth sternite about 1.5 times as wide as long, glabrous on basal 2/3, with some setae near posterior margin ( Fig. 24I ). Hypoproct with numerous setae and much pubescence ( Fig. 24J ).

Specimens examined. CHINA: 9♀ ( SCAU, Nos. 125427–35, DNA #1893, 1977–79), Wangtianshu, Mengla , Yunnan, 21°36'09''N, 101°35'06''E, alt. 660m, 21–25.iv.2007, ex tree trunks, H.W. Chen, J.J. Gao; JAPAN: 2♂ ( SCAU, Nos. 125806, 07, DNA #1872), Iriomote Island, Ryukyu Islands , 24°20'31''N, 123°49'20''E, alt. 330m, 14,18. vi.1999, ex tree trunks, H.W. Chen.

Distribution. China ( Taiwan, Yunnan*), Japan (Honshu, Ryukyu Islands*).

Figures

FIGURE 24. Stegana (Steganina) izu Sidorenko, 1997, male from Iriomote Island, Ryukyu Islands, Japan, and female from Mengla, Yunnan, China, male (A–G) and female terminalia (H–J). A. Epandrium, surstylus, and cercus in lateral view; B. Surstylus in ventral view; C, D. Hypandrium, pregonite, aedeagus, and phallapodeme in ventral and lateral views; E, F. Aedeagal sheath in ventral and lateral views; G. Subepandrial sclerite in ventral view; H. Epiproct and cercus in dorsal view; I. Eighth sternite in ventral view; J. Hypoproct in ventral view.