Tsukiyamaia, Zhu, Jian-Qing, Chiba, Hideyuki & Wu, Li-Wei, 2016

Zhu, Jian-Qing, Chiba, Hideyuki & Wu, Li-Wei, 2016, Tsukiyamaia, a new genus of the tribe Baorini (Lepidoptera, Hesperiidae, Hesperiinae), ZooKeys 555, pp. 37-55 : 40-41

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.

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.

Etymology.

The generic name is derived from Hiroshi Tsukiyama, whose outstanding contribution to the taxonomy of Hesperiidae is noteworthy.