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Subject: Maladera (=Autoserica) castanea (Arrow) reported for the first time in Canada
Date posted: September 11, 2003
Source: Journal of Economic Entomology 96(4):1221-1229
An insect sampling study in two Quebec vineyards from 1997 through 1999 revealed the first Canadian report of the Asiatic garden beetle (AGB), Maladera (=Autoserica) castanea (Arrow). This scarab beetle is known to occur in the United States. Similar to the Japanese beetle in size and shape, adults of the AGB can be a serious pest of vegetables and ornamentals, feeding at night and returning to the soil during the day. Larvae of the AGB feed on roots and root hairs within the soil. Whether this beetle will be a comparable pest in Canada is unknown.

See Journal of Economic Entomology for the full report:
Bostanian, N. J., C. Vincent, H. Goulet, L. Lesage, J. Lasnier, J. Bellemare, and Y. Mauffette. 2003. The arthropod fauna of Quebec vineyards with particular reference to phytophagous arthropods. J. Econ. Entomol. 96(4): 1221-1229. ( http://esa.edoc.com/server-java/Propub/esa/ec-v96n4.contents)

For additional information on the AGB, see:
http://www.gcsaa.org/gcm/2003/apr03/PDFs/04Whitegrubs.pdf