Tsukiyamaia, a new genus of the tribe Baorini (Lepidoptera, Hesperiidae, Hesperiinae) Author Zhu, Jian-Qing Author Chiba, Hideyuki Author Wu, Li-Wei text ZooKeys 2016 555 37 55 http://dx.doi.org/10.3897/zookeys.555.6144 journal article http://dx.doi.org/10.3897/zookeys.555.6144 1313-2970-555-37 F0C87B05E17144F292A03D1C21872FDA F0C87B05E17144F292A03D1C21872FDA Taxon classification Animalia Lepidoptera Hesperiidae Tsukiyamaia gen. n. Figs 1-4 Type species. Tsukiyamaia albimacula sp. n.; designated by monotypy. Description. Antennae: 9.5−10 mm in length, half-length of forewing, nudum 13-14 on apiculus; Labial palpi: Second segment stout and erect, with brown hairs dorsally and yellowish hairs ventrally; third segment short, pointed and erect. Legs: middle tibiae unspined. Wing-shape: Forewing 19−20 mm in length, triangular in shape; costa about 1.4 times as long as dorsum, approximately straight, weakly arched on anterior half; apex angulated; termen lightly curved on anterior half; inner dorsum almost straight. Hindwing nearly triangular in shape; costa slightly longer than dorsum, obviously arched; termen curved on anterior half; tornus concave; dorsum almost straight. Wing venation (Fig. 5). Forewing: vein 2A very short not reaching dorsum; vein Cu2 arising before the origin of vein R1 and slightly nearer the origin of Vein M3 than to base; Vein M2 obviously closer to Vein M3 than to Vein M1 at origin; cell longer than half the wing length. Hindwing: Vein Cu1 arising beyond the origin of Vein M1; Vein Cu2 arising beyond the origin of Vein Rs; Vein M2 absent. Discocellular veins on both wings obvious. Figures 1-5. Tsukiyamaia albimacula . 1 holotype, ♂, upperside 2 holotype, ♂, underside 3 paratype, ♀, upperside 4 paratype, ♀, underside 5 wing venation. Scale bar: 10 mm. Wing markings (Figs 1-4). without stigma or secondary sexual characters; forewing with semi-hyaline spots in spaces Cu2, M3, M2, R3, R4, R5 and cell; hindwing upperside with a cigar-shaped spot in space M2, underside centrally with a large white marking restricted from vein 2A to vein Rs. Male genitalia (Figs 6-10). Tegumen swollen; uncus U-shaped bifurcated; gnathos bifurcated, slightly turned inside at tip and outwardly spined; valva approximately rectangle; dorsal process of harpe well produced; ventral process of harpe weakly protruded; phallus deeply bifid distally, well protruded and heavily spined outwardly; cornuti absent; manica membranous; juxta U-shaped. Figures 6-10. Male genitalia of Tsukiyamaia albimacula . 6 lateral view of ring 7 dorsal view of tegumen 8 outer view of left valva 9 ventral view of phallus 10 lateral view of phallus. Scale bar: 1 mm. Etymology. The generic name is derived from Hiroshi Tsukiyama, whose outstanding contribution to the taxonomy of Hesperiidae is noteworthy.