Dichomeris sclerospinula Park & Li, sp. nov.

urn:lsid:zoobank.org:act: 3382249F-F160-42E0-826D-6B9BF384C03E

(Figs 25, 44)

Type material. Holotype ♂, VIETNAM: Vinh Phuc Prov.: Tam Dao Nat. Park, 950 m, 26 iv 2006, leg. Park, Kim & Kang, gen. slide no. nklep023. Paratypes: 6♂, same locality as holotype, 1000 m, 04–05 v 2005, leg. KT Park & SR. Kim, gen. slide nos. CIS-6305, nklep059. All types in NIBR.

Description. Adult (Fig. 25). Wingspan 12.5–14.5 mm. Head dark brown; frons gray. Ocellus present. Antenna with scape dark brown on dorsal surface, pale yellow on ventral surface; flagellum alternately dark-brown and yellowish brown on dorsal surface. Second segment of labial palpus dark brown on outer surface, grayish brown on inner surface except yellow near base, with gray-tipped triangular scale tuft dorsally; 3rd segment smoothly clothed, slightly shorter than 2nd segment, dark brown ventrally. Thorax and tegula dark brown; mesothoracic anepisternum without hair pencils in male. Fore- and midleg dark brown on outer surface, femora grayish white, tibiae and tarsi pale yellow on inner surface; hindleg grayish brown on outer surface, yellowish white apically, pale yellow on inner surface, tibia clothed with long, yellowish brown scales. Forewing elongate; ground color dark brown, with ill-defined yellowish–white postmedian line from costal 3/4 to before tornus, strongly convex outward, followed by more darkened area; apex acute; termen oblique; fringe dark brown. Hind wing dark grayish brown; fringe concolorous with ground color.

Male genitalia (Fig. 44): Uncus elongated, semiovate, densely setose on ventral surface. Gnathos strongly bent at basal 1/4, L-shaped, with acute apex upturned; culcitula irregular-shaped, densely spined. Valva subequal to length of tegumen plus uncus, nearly patrallel sided in basal 2/3, then inflated distally, with round apex; free ventral lobes small, about 1/5 length of valva, with round apex. Vinculum with two pairs of heavily sclerotized lateral lobes, symmetrical in both arms: posterior one, digitate, about 1/3 length of lateral arm, with round apex, densely setose; anterior one slightly shorter, spine-like; valvella setose, about equal to length of dorsal lobe. Saccal region narrow, slightly concave medially on anterior margin. Sica single, bifurcated apically, about equal to length of vinculum, nearly parallel sided. Aedeagus stout, as long as valva, nearly parallel-sided, bluntly rounded at base and apex; two short, sclerotized lobes from zone, at lateral side respectively, symmetrical, about 1/5 length of aedeagus, slightly bifurcate distally.

Distribution. Vietnam (Vinh Phuc).

Diagnosis. This species can be distinguished from congeners by the dark-grayish brown forewing. It can be easily distinguished from congers by having the gnathos strongly bent into L-shape, vinculum with two pairs of strong lateral lobes, and a strong sica parallel sided, bifurcated apically.

Etymology. The specific name is derived from the Latin, -sclero- (= sclerotized) and spinula (= spine), referring to the sclerotized spine on vinculum of the male genitalia.