Rhodostrophia jacularia (Hübner, 1813)

Figs 1–2, 16, 27, 38, 48

Geometra jacularia Hübner, 1813, Samml. Eur. Schmett., 5 Geometrae (1): pl. 84, fig. 431. Syntypes, Europe.

Eusarca jacularia var. minor Alhéraky, 1892, in Romanoff, Mém. Lépid., 6: 71. Syntypes 3 ♁, China: Ordosse, Taï-tou-haï near the River Oulane-morine.

Rhodostrophia jacularia: Meyrick, 1892, Trans. ent. Soc. Lond., 1892: 92.

Rhodostrophia tyugui Vasilenko, 1998, Zool. Zh., 77 (10): 1138, figs, 2, 4. Type locality: Russia, Altai, South Chyua Range.

Diagnosis. The species can be distinguished by the following characters: the male hind tibia has four spurs; the postmedial line of the forewing is usually brown, broad and wavy. In the male genitalia, the uncus is long and narrow, slightly dilated and bifid at tip; the valva is very broad and spinose on the ventro-terminal margin; the aedeagus is curved; the cornutus is absent. In the female genitalia, the ovipositor is spinose; the ductus bursae is straight and strongly sclerotized except the anterior part; the signum is large coat-shaped.

Material examined. CHINA: Inner Mongolia (IZCAS): 2 6, Erenhot, 5.VIII, 13.VI.1971; 2 6, Abag Qi, 10.VIII.1984 ; 1 6, Ulanqab Meng, 14.VI.1971; 1 6, Ulanqab Meng Qianqi, 24.VII.1986, coll. Xing Jie ; 2 6, Alxa Youqi, 2, 20. VI.1987; 1 6 1♀, Alxa Gulaben Management Station, 2135 m, 25–28.VII.2010, coll. Song Wenhui et al.; 2 6, Alxa, Beisi, 2070 m, 1.VIII.2010, coll. Yang Xiushuai. Gansu (IZCAS): 1 6, Yuzhong, Xinglong Shan, 2000 m, 21. VI.1987; 1♀, Lanzhou, 20.IV.1963, coll. Sun Yubin. Shanxi (ZFMK): 2 6, Mien-shan, Mittlere Höne, 1500 m, 4. VI.1937, H. Höne.

Distribution. China (Inner Mongolia, Shanxi, Gansu), Russia, northern Kazakhstan, southern Siberia (Alitai and Sajan Mts.), Mongolia to Dahuria, East-Europe.

Remarks. The wings of the female are narrower than those of the male (Fig. 2).