Abstract
We report an outbreak of Ivela auripes (Butler) (Lepidoptera, Lymantridae) in early May 2004 in a secondary forest of Hiraoka Park, Higashiosaka City, Osaka Prefecture, central Japan. The larvae consumed almost all of the leaves of their host tree Cornus macrophylla (Cornaceae) in the forest. We also found an adult of an arboreal predator, Dendroxena sexcarinata (Motschulsky) (Coleoptera, Silphidae), preying on an 7. auripes larva. We describe the life history of D. sexcarinata, which overwinters in the adult stage, and its adult feeding activity in early summer when lepidopteran larvae are abundant.
