Pterotopteryx vietana sp. nov. (Figs. 4–5, 9, 11) Types: HOLOTYPE Ψ, North Vietnam, Vin Phu Province, Tamdao Town, Tamdao National Park, 1000 m, 5.V.2005, K.­T. Park & S. R. Kim, genitalia slide number KNIC­767. PARATYPES. North Vietnam: Vin Phu Province: 1 (unknown sex), Tamdao Town, Tamdao National Park, 910 m, 13.VIII.2005, K.­T. Park, M. Y. Kim & M. Y. Chae; 1 (unknown sex), Tamdao Twon, Tamdao National Park, 950 m, 14.VIII.2005, K­T. Park, M. Y. Kim & M. Y. Chae; 1Ψ, Tamdao Town, Tamdao National Park, 950 m, 31.VII.2006, K.­T. Park, M. Y. Chae & N. Cuong. Diagnosis. This species is superficially most similar to Pterotopteryx dodecadactyla (Hübner) which is distributed in Europe. It differs from the latter by the well­developed medial and subterminal fascia of the forewing. Description. Adult. Head (Fig. 5) with whitish cream scales. Labial palpus densely scaled, pale whitish; 2nd segment as long as horizontal diameter of compound eye with somewhat dark brownish gray scales; 3rd segment narrow, short, ca. 0.6 times as long as horizontal diameter of compound eye, pale whitish gray, dark brown in basal half. Thorax (Fig. 4) whitish gray. Wingspan 11–14 mm. Forewing whitish ash­gray; 1st lobe rather thick, dark grayish brown at base, with seven small slender spots along costa; spot I close to II near the point of branching between 1st and 2nd cleft; spot III close to IV before middle; spot V on middle, rather wide, more than 2 times as long as the former; spot VI small, trapezoidal, subapical; spot VII on apex, slender, rather wide; medial fascia on 2nd–6th lobes located at the level of costal spot V, as long as costal spot V, rather wide and distinct, with a slender whitish line in outer margin; subterminal spots on 2nd –6th lobes under gap of costal spot VI–VII, rather wider and longer that the costal spot VII. Hindwing similar to forewing in coloration and pattern, medial fascia rather distinct and well defined. Male unknown. Female genitalia (Fig. 9). Papilla analis subtriangular, narrowed terminally. Apophysis anterioris as long as posterioris. Ostium bursae wine glass­shaped; postvaginal plate rectangular, relatively long, slightly narrowed near ostium bursae. Corpus bursae long, sack­shaped, membranous, granulated on entire surface; signum absent. Ductus bursae extremely short, poorly defined; ductus seminalis narrow, arising from middle of ductus bursae. Abdomen (Fig. 11) with upper liplike sclerotized part on each segment 2 to 7. Distribution. Vietnam (N. Vietnam). Etymology. The specific name is derived from the locality of the new species.

Published as part of Byun, Bong-Kyu & Park, Kyu-Tek, 2007, Discovery of two new species of Alucitidae (Lepidoptera) from Vietnam, pp. 51-57 in Zootaxa 1390 on pages 55-56, DOI: 10.5281/zenodo.175221