Meganola xui Han 2017, sp. nov.

Meganola xui sp. nov. (Figs 12–14)

Material Examined. Holotype. Male, Mêdog County, Tibet, 4.x.2010, Leg. Haiming Xu. Paratype. 1 male, with the same date as the holotype. All specimens are deposited in South China Agricultural University, Guangzhou, China (SCAU).

Diagnosis. Externally, M. xui is closer to M. weixiensis than to other related species, but the former one has the shadow medial line, the feeble marking at medial line area before cell and without a row of black lines and white spots inside of terminal line compared with the latter one. The main difference in male genitalia is as follows: uncus slender and shrink medially, harpe round and screwy apically, aedeagus long and thin in M. xui, while uncus more broad, harpe sharp apically with dentation dorsally and aedeagus more broad and short in M. weixiensis.

Description. Adult (Fig. 12). Wingspan 18–21 mm. Head white; antenna bipectinate in male. Thorax covered with grayish white hairs; collar and tegulae grayish white. Abdomen brown. Forewing ground color silver with grayish white; the dark brown marking at medial line area before cell and the brown strip along with costal margin at wing base; basal and antemedial lines undistinguished; medial line pale brown shadow; postmedial line pale brown, waved; subterminal line pale brown, arcuate; terminal line pale brown; cilia grayish white. Hindwing ground pale brown. Male genitalia (Figs 13 & 14). Uncus slender, shrink medially, tapering distally and pointed apically; tegumen long, medium broad. Valva elongate; costa concave; harpe round and screwy apically, stronger, sclerotised; saccus U-shaped. Aedeagus cylindrical, long and thin, with many small spinulae apically; vesica without cornuti. Female. Unknown.

Etymology. The specific name is dedicated to Haiming Xu for collecting specimens.

Distribution. China (Tibet).