Ypsolopha parallela (Caradja, 1939)

(Figs 12, 63, 112, 162)

Cerostoma tucella var. parallela Caradja, 1939: 14 .

Ypsolophus parallelus (Caradja): Moriuti, 1964: 201; Yang, 1977: 104. Ypsolopha parallelus (Caradja): Moriuti, 1977: 84; Moriuti, 1982: 209; Byun & Bae, 2001: 157; Yamauchi, 2003: 453. Type locality: China (Shanxi).

Adult (Fig. 12): Wing expanse 16.0−25.0 mm. Forewing with R4 and R5 separated (Fig. 63).

Material examined. 2 ♀♀, Mt. Xinglong, Yuzhong County (35°53′ N, 104°06′ E), Gansu Province, 2130 m, 31.vii.1993, coll. Houhun Li; 2 ♂♂, 4 ♀♀, Mt. Xinglong, Yuzhong County (35°53′ N, 104°06′ E), Gansu Province, 2178 m, 19−21.viii.2007, coll. Feng Yang & Hanguang Gao; 1 ♂, Neixiang County (33°02′ N, 113°50′ E), Henan Province, 1350 m, 15.vii.1998, coll. Houhun Li; 15 ♂♂, 10 ♀♀, Mt. Wangwu, Jiyuan (35°04′ N, 112°35′ E), Henan Province, 1400 m, 3−4.vi.2000, coll. Haili Yu; 1 ♀, Huixian (35°27′ N, 113°27′ E), Henan Province, 780 m, 14.vii.2002, coll. Xinpu Wang; 1 ♀, Jiuzhaigou (33°17′ N, 103°54′ E), Sichuan Province, 2300 m, 17.vii.2002, coll. Shulian Hao; 43 ♂♂, 30 ♀♀, Mt. Baxian, Tianjin (39°02′ N, 117°12′ E), 500−550 m, 23.vi.2001 − 11.ix.2005, coll. Houhun Li et al.; 7 ♂♂, 8 ♀♀, Mt. Jiulong, Tianjin (39°02′ N, 117°12′ E), 180 m, 10.vi.2004, coll. Houhun Li et al.; 29 ♂♂, 10 ♀♀, Heishuihe, Mt. Baxian, Tianjin (39°02′ N, 117°12′ E), 550 m, 13−20.ix.2009, coll. Bingbing Hu, Jing Zhang & Zhipin Liang.

Host plant. Quercus serrata Murray (Moriuti 1977) .

Distribution. China (Gansu, Henan, Shanxi, Sichuan, Tianjin), Japan, Korea, Russia.

Diagnosis. This species is quite similar to Y. sarmaticella (Rebel) in the forewing having two parallel stripes, but differs from it in the yellowish brown thorax (Fig. 12), the separated R4 and R 5 in the forewing (Fig. 63), the slender phallus about 1.6 times length of the valva in the male genitalia (Fig. 112), and the ductus bursae twisted near the corpus bursae in the female genitalia (Fig. 162); in Y. sarmaticella (Rebel), the thorax is yellowish white (Fig. 13), R4 and R5 of the forewing are short stalked (Fig. 63), the male phallus is nearly as long as the valva (Fig. 113), and the female ductus bursae is straight (Fig. 163). Ypsolopha parallela is also similar to Y. acerella Ponomarenko, Sohn et Zinchenko in the male genitalia, but can be distinguished by the short coecum about 1/5 length and the cornuti about 1/3 lengh of the phallus; in Y. acerella, the coecum is about 1/3 length and the cornuti are about 1/2 lengh of the phallus (Fig. 119).