Diachrysia witti Ronkay, Ronkay & Behounek, 2008

(Plate 3, fig. 24)

Diachrysia witti Ronkay, Ronkay & Behounek, 2008, The Witt Catalogue 1: 32, plate 5, figs 3–4, plate 40, figs 7–9, gen. fig. 18. Type locality: Russia, Vladivostok.

Synonymy. Diachrysia bieti sensu auctorum, nec Oberthür, 1884 (Ronkay et al. 2008).

Diagnosis. The species is rather remote within the entire chryson -lineage (Ronkay et al. 2008). It can be distinguished easily from the other members of the D. leonina-D. bieti lineage by its dark grey-brown ground colour with fine golden-bronze sheen, well-defined antemedial, medial, postmedial and subterminal crosslines and the uniformly darkened hindwing. The distinctive features of the male genitalia, in comparison with D. leonina, D. oberthueri, and D. bieti, are the longer, stronger uncus, the more rounded, medially broadest valvae, the much shorter vinculum, the reduced terminal cornutus; those of the female genitalia are the more or less straight ductus bursae and the rather short, elliptical-ovoid corpus bursae.

Distribution. A Sino-Pacific species, occuring in the temperate parts of the Pacific region (Russian Far East: Primorye, Korea, Japan, north-east China) and in the Central Chinese mountains in Shaanxi (Ronkay et al. 2008).