Tsukiyamaia albimacula, 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 : 41-44

Taxon classification Animalia Lepidoptera Hesperiidae

Tsukiyamaia albimacula sp. n.

Description.

Antennae 9.5−10 mm in length, about 1/2 the length of forewing, black brown except club gray dorsally and grayish yellow ventrally; nudum 13-14 on apiculus. Palpi erect, with brown hairs dorsally and yellowish hairs ventrally. Thorax and abdomen covered with brown hairs. Forewing 19−20 mm in length. Both wings ground color black brown at each sides, with white spots and marking; costal area of forewing and entire hindwing covered with brown scales underside; cilia of both wings brown. Upperside forewing: three apical spots in spaces R3−R5, arranged linear; one discal spot present at the middle of the space M2; in space M3, a reduced spot present in the holotype, and absent in two paratypes; cell spots conjoined as trapezium-shaped, which also conjoined with the Cu1 spot. Underside forewing markings same as upperside. Upperside hindwing: only with a cigar-shaped spot in space M1. Underside hindwing: Discal area with a very large, rectangle white marking extending from vein Rs to the middle of space Cu2. Inward margin smooth, upward to the end of the discal cell. Outward margin lightly serrated, and evidently elongated in space M1.

Male genitalia (Figs 6-10). Tegumen swollen; uncus U-shaped, bifurcated dorsally, pointed at tip laterally; gnathos bifurcated, longer and wider than uncus, slightly turned inside at tip and outwardly spined; saccus short, pointed distally; valva approximately rectangle; ampulla slightly elongate upward, harpe dorsally with a long and straight elongated process and ventrally with a relatively short and small process, outward margin concave and covered with dense hairs; costa smooth dorsally, sacculus concave ventrally; phallus 1.4 times as long as valva; subzonal about 1.3 times as the length of suprazonal, distally deeply bifid as two protruded processes, equal in length and heavily spined outwardly; without cornuti; manica membranous; juxta U-shaped.

Female genitalia (Figs 11-12). Papilla analis nearly rectangle, covered with hairs on the surface; apophysis posterioris slender and short; Lamella postvaginalis oblong with outer margin arched; lamella antevaginalis with triangular parts laterally, slightly sclerotized; ductus bursae short, wide as ostium bursae, strongly sclerotized; bursa copulatrix oval, membranous with no signum.

HOLOTYPE ♂: Phutao, Kachin, N. of MYANMAR, ~1000m, 09-VI-2000, Male genitalia examined by H. Chiba, #HC030511.

PARATYPES: 1♂, the same locality as the holotype, 29-V-2000.; 1♂ ditto, 08-VI-2000.; 1♂ Panglan, ~700m, Kachin, N. of MYANMAR, 02-IX-2002. 1♂ ditto, 04-IX-2002.. 1♂ ditto, 05-IX-2002, 1♂ ditto, 29-IX-2002, 1♂ Mt. Fan Shi Pang, ~1800m, N. VIETNAM, IV-2002. 1♂ Baopo, Dulongjiang, Yunnan, CHINA, 1500m, 29-V-2011, Jia-Qi Wang leg.; 1♀, Maku, Dulongjiang, Yunnan, CHINA, 1900m, 03-VI-2009, Jian-Qing Zhu, leg; 1♂ CHINA, Yunnan, Tengchong, Gaoligongshan National Nature Reserve, Zhengding, 2200m, 26-IV-2014, LO Yik Fui Philip coll. (YFL140055).

Voltinism. Judging from the collecting data, the species is expected to be multivoltine.

Distribution

(Fig. 13). China (Yunnan), Myanmar (Kachin), and Vietnam (Mt. Fan Shi Pang).

Biology.

Tsukiyamaia prefers open habitats, such as open field on the hillside, farmland and heavily disturbed shrub land. It is active near the ground and stream under strong sunlight. The female frequents flowers and the male performs padding behavior.

Etymology.

The species is named for its large white marking on underside of the hindwing.

Diagnosis.

In appearance, Tsukiyamaia is peculiar in Baorini with a large white marking in the center of the hindwing underside. The male genitalia of Tsukiyamaia can be separated from those of Baorini genera by the uncus lacking a pair of basal processes, and the harpe dorsally with a long and straight elongated process and ventrally with a relatively short and small process.