Explanation of Names
Popillia japonica Newman 1841
A single (adventive) species in the genus. (1)
3/8 inch (10 mm) long and 1/4 inch (7 mm) wide.
e. N. Amer. and spreading westward (PE-GA-CO) (BG data); found in CA (2005, Santa Clara Co.) (2)
native to E. Asia, introduced in N. Amer. (NJ 1916, with nursery stock)
mostly: Jun-Aug (BG data)
Larvae feed on roots of many plants. Adults feed on foliage, flowers and fruits of various plants. (3)
Adult females lay eggs in soil June through early fall. Grubs feed on roots until hibernating underground (4-8" deep) as third instar larvae when cool weather comes.
The original U.S. population was detected in New Jersey in 1916, having been introduced from Japan.
Parasitized by the introduced fly Istocheta aldrichi
and wasp Tiphia vernalis
, and the native wasp Scolia dubia
Potter, D.A. and W. Held. 2002. Biology and Management of the Japanese Beetle. Annual Review of Entomolology 47: 175–205. (Full PDF
- David J. Shetlar and Jennifer E. Andon, Department of Entomology, Ohio State University Extension
- Erin Hodgson, Department of Entomology, Iowa State University
- M.F. Potter, D.A. Potter, and L.H. Townsend, Extension Entomologists, University of Kentucky College of Agriculture