Dryodurgades formosanus (Matsumura)

Figs 1 C, G, K; 9A–D.

Agallia formosanus Matsumura 1912: 313 .

Dryodurgades formosanus (Matsumura): Viraktamath, 1973:309 –310, Figs 3–6. Dryodurgades bifurcatus Cai & Shen, 2000: 39, Figs 4 a–j.; Cai & Shen, 2002: 272, synonymy by Viraktamath (2011).

Material examined. CHINA: 23, Hunan, Chenzhou, 1985-7-26, Zhang Yalin and Chai Yonghui; 23, Hunan, Chenzhou, 8. viii. 1985, Zhang Yalin and Chai Yonghui; 13, Sichuan, Emeishan, Wannianshi, 10. ix. 1988, Xu Qiuyuan, Zhou Jingruo and Zheng Shuling; 13, Guizhou, Fanjingshan, Huguoshi, 950m, 4. viii. 2001, Sun Qiang; 1Ƥ, Shaanxi, Xi’an, 6 vii. 1979, Chen Tong.

Distribution. China (Taiwan, Hunan, Sichuan, Guizhou, Henan).

Remarks. This species has a larger number of cross veins on the forewings compared to the other two species of the genus found in China. The aedeagus is more cylindrical with one pair of distal processes, each one expanded near the apex then tapering. This species appears less common compared to D. lamellaris .