Leucanithosia nansabon sp. n.

http://zoobank.org/ urn:lsid:zoobank.org:act: D5AAD6D5-1537-4B57-89BC-9C74FE89C557

(Figs 12, 13, 48, 49)

Type material. Holotype (Figs 12, 48): male, “ Myanmar (Burma) | 25 km E Putao | env. Nan Sa Bon vill. | 800 m, 6–9. V. 1998 | leg. Murzin & Sinjaev [recte: Sinyaev]” / “Slide | ZSM Arct. | 2021-319♁ | A. Volynkin ” (MWM/ ZSM).

Paratype. MYANMAR: 1 male, Chin State, Mount Victoria, 2200–2500m, montane pine forest, mid–late October 2012, Dr. V . Kravchenko & team, gen. prep. No.: AV6745 (prepared by Volynkin) (GMF-B) .

Diagnosis. The forewing length is 15.0–17.0 mm in males. The male genital capsule of L. nansabon is reminiscent of L. diehli but distinguished by the narrower uncus, the shorter vinculum, the somewhat shorter (in proportion to the valva length) and almost straight distal saccular process which is curved in the congener. The phallus of the new species is narrower and somewhat shorter than in L. diehli (in proportion to the valva length). The vesica of L. nansabon differs from L. diehli in the presence of a single and broadly conical medial dorsal diverticulum ( L. diehli has two narrower and utricular medial dorsal diverticula), and the distal diverticulum directed ventrally perpendicular the proximal axis of the vesica whereas it is directed distally along the axis of the vesica in the congener. The detailed comparison with another similar species, L. witti is provided below in the diagnosis of the latter species.

The female is unknown.

Distribution. The new species is currently known from northern Myanmar (Kachin and Chin States).

Etymology. The specific epithet is homonymic of the type locality of the new species, Nan Sa Bon village. The name is a noun in the nominative singular in apposition.