Scoparia iwasakii Sasaki, 1991

(Figs. 1G, 2G, 2H)

Scoparia iwasakii Sasaki, 1991: 95–96, figs. 1–2, 17, 24. TL: Japan, Honshu, Akita Pref., Yuze, Orikumaizawa.

Material examined. 1male, Gomyung-ri, CB: Jecheon, 2019.09.02. (Kim SS).

Diagnosis. Scoparia iwasakii can be diagnosed by the slender grayish forewing with the thick, band-shaped, dark brown discal dot on the central fascia, and the undulating postmedial line and subterminal lines. Scoparia iwasakii is externally similar to S. congestalis Walker, 1859 in wing pattern element, but can be distinguished by the larger wingspan and the sharply pointed distal process of sacculus in the male genitalia.

Description. Wingspan 16mm. Head. Antenna filiform, frons broad, mixed with whitish and ochreous scales; maxillary palpi porrect, tip with brush-like hairs, brown; labial palpi long, about three times to eye diameter, 1 st segment whitish, 2 nd segment laterally dark brownish, 3 rd segment light brown. Body whitish. Forewing grayish in ground color; basal part blackish; antemedial line dark brown, slanted, undulating; postmedial line dark brown, dentate, medial part weakly projected outward; central fascia broad, weakly tapered from costa to median, discal dot thick, band-shaped, dark brown; subtermen with a dark brown undulating line; termen dotted with dark brown. Hindwing light grayish in ground color; postmedial line grayish, weakly appearing; termen tinged with brown scales. Male genitalia. Uncus triangular, basally thicker, strongly tapered distally, tip pointed; gnathos long, spinelike longer than the length of uncus; juxta simple; saccus triangular. Valva simple, distally expanded; costa medially weakly concave; sacculus weakly sclerotized, triangular, sharply pointed distal process, not strongly extended the ventral surface of valva. Aedeagus stout; cornuti about three spinular processes in a different size. Female genitalia (based on Sasaki, 1991). Papillae anales simple, rounded; posterior apophyses thick, almost equal length to 8 th segment; anterior apophyses basally thicker, gradually tapered distally; ostium bursae simple, weakly sclerotized; ductus bursae long medially with a sclerotized colliculum; corpus bursae ovate, densely covered with minute spicules, signa a linear patch of minute spicules.

Distribution. South Korea and Japan.

DNA barcoding. One specimen from South Korea (OK501207) was sequenced, and the genetic difference between S. iwasakii and its relative, S. nipponalis Inoue was 6.4%.

Remarks. The genus Scoparia can be recognized by the male genitalia with a long spinular gnathos, the welldeveloped sacculus with a free distal process, and the presence of cornuti (Li, 2012). The genus comprises more than 230 species on all continents except Antarctica, oceanic islands, and tropical lowland forests (Li, 2012). In South Korea, however, only two species of Scoparia are known: S. congestalis Walker, 1859, and S. iwasaki.