Abstract
Arge cerasus SHINOHARA and HARA, n. sp., is described from Hokkaido and Honshu, Japan. The adults are well characterized by the brown-marked clypeus, pale brown antenna! flagellum, black-banded forewing and basally whitish hind tibia in both sexes and the basally whitish hind femur in the female. The larvae are gregarious leaf-feeders on Cerasus max:imowiczii and C. nipponica var. kurilensis (Rosaceae) and the late instar larvae are recognized by the entirely black head and thoracic legs and largely black dorsum of the tenth abdominal segment. Arge cerasus probably has two or three generations a year. Cerasus max:imowiczii is recorded as a new host for Spinarge prunivora HARA and SHINOHARA, 2006.
https://ror.org/04r8tsy16 
