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Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

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Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

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Species Popillia japonica - Japanese Beetle

Japanese Beetle - Popillia japonica Japanese Beetle - Popillia japonica Popillia japonica Unknown Beetle - Popillia japonica Popillia japonica Possible beetle? - Popillia japonica Japanese Beetles with Istocheda Aldrichi eggs - Popillia japonica Japanese beetle - Popillia japonica
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
Superfamily Scarabaeoidea (Scarab, Stag and Bess Beetles)
Family Scarabaeidae (Scarab Beetles)
Subfamily Rutelinae (Shining Leaf Chafers)
Tribe Anomalini
Genus Popillia
Species japonica (Japanese Beetle)
Explanation of Names
Popillia japonica Newman 1841
~10 mm
mostly e. N. Amer. (away from the Gulf coast) w/ scattered w. records - Map (1)(2), native to E. Asia
mostly: June-Sept (BG data)
Larvae feed on roots of many plants. adults feed on more than 350 different species of plants, but are especially fond of roses, grapes, smartweed, soybeans, corn silks, flowers of all kinds, and overripe fruit.
Life Cycle
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.
Parasitized by the introduced fly Istocheta aldrichi and wasp Tiphia vernalis, and the native Scolia dubia.
earliest record in our area: NJ 1916
Print References
Potter D.A., Held W. (2002) Biology and management of the Japanese Beetle. Ann. Rev. Entomol. 47: 175–205. (Full text)
Frank K.D. (2017) Establishment of the Japanese Beetle (Popillia japonica Newman) in North America near Philadelphia a century ago. Ent. News 126: 153-174.
Internet References
Ohio State (Shetlar & Andon 2015)(3)
Iowa State (Hodgson 2009)
Featured Creatures (Gyeltshen & Hodges 2010)(4)