Synonyms and other taxonomic changes
Raphiptera argillaceellus (Packard, 1867)
Size
Wingspan about 15 mm, based on photo by Jim Vargo at MPG
Identification
Adult: forewing outer margin falcate near apex, resulting in sharply-pointed tip; forewing light brown to brownish-gray with slender white stripe, tapered at both ends, extending from base to postmedial area but not reaching ST line; white stripe has blackish tooth along lower edge about two-thirds from base; subterminal line black, V-shaped; black apical dash bordered below by triangular white patch; dark oblique line from costa to white strip represents upper portion of PM line; hindwing light gray
Season
adults fly from June to August
Food
larvae probably feed on grasses
Remarks
one of the few species in the tribe Crambini whose forewing has a pronounced falcate outer margin
See Also
Crambus quinquareatus forewing darker brown, and white stripe wider and extends to ST line
Crambus satrapellus forewing bicolored brown and yellow with white elliptical spot beyond end of white stripe