Idmon flavata, Fan, Xiaoling, Wang, Min & Zeng, Ling, 2007

Fan, Xiaoling, Wang, Min & Zeng, Ling, 2007, The genus Idmon de Nicéville (Lepidoptera: Hesperiidae) from China, with description of two new species, Zootaxa 1510, pp. 57-62 : 58-59

Idmon flavata sp. nov.

Figs. 1–7

Holotype: ♂, Yinggeling, Hainan, China, 2005-V-12, leg. Liusheng Chen. Paratypes: 2♂, same data as holotype. The type specimens are deposited in the Insect Collection of the South China Agricultural University ( SCAU), Guangzhou.

Description

Male ( Figs. 1–2 ). Forewing length 17 mm, antenna length 11 mm.

Antennae dark brown, longer than 1/2 of forewing costa, club yellow ventrally; palpi second segment erect, densely covered with long greyish white scales ventrally, third segment long and slender, distinctly protruding.

Wings upper surface with ground color dark brown, unmarked, cilia grey, without secondary sexual characters. Forewing underside ground color the same as that of upper surface, covered with yellow scales at apex and the end of cell. Hindwing underside yellow, costa and termen brown, veins yellow, with small black spots in the spaces Cu2 to Rs, the one in space Sc+R1 blurred.

Male genitalia ( Figs. 3–7 ). Uncus long, about twice longer than tegumen, deeply bifid at half distal portion, its two arms long and thin, running slightly outwardly; socius absent; gnathos well developed, elbowshaped, membranous and separated each other at tip; saccus rather long; valva simple, broad, with the distal upper portion shallowly bifid, forming the ampullar and the harpal processes, the ampullar process with upper margin slightly swelled, the harpal process with lower margin obviously convex, outer margin arched; aedeagus with subzonal sheath nearly as long as suprazonal sheath, and bifurcated distally; juxta U-shaped with lateral arms curved inwardly.

Remark

The new species strikingly resembles Idmon fujianana ( Chou & Huang, 1994) , but can be easily distinguished by hindwing underside densely covered with yellow scales, as well as the clearly defined small black spots in spaces Cu2 to Rs, the one in space Sc+R1 indistinct; uncus with the two lateral arms not parallel each other; valva with the ampullar and harpal processes hardly connected at apex; juxta U-shaped with lateral arm curved inwardly.

Figures

FIGURES 1 – 2. Idmon flavata sp. nov. (Scale = 10 mm) 1. Dorasal view, 2. Ventral view.

FIGURES 3 – 7. Male genitalia of Idmon flavata sp. nov. 3. ring, lateral view, 4. tegumen, dorsal view, 5. valva, inner view, 6. aedeagus, 7. juxta.