Annual Report of the Kanto-Tosan Plant Protection Society
Online ISSN : 1884-2879
Print ISSN : 1347-1899
ISSN-L : 1347-1899
Expansion of the Distribution Range of the Ragweed Beetle, Ophraella communa LeSage, (Coleoptera: Chrysomelidae) and its Natural Enemies in Japan
Seiichi MORIYAKoichi TANAKAKohji YAMAMVRAToru SHIMIZUShigehiko SHIYAKE
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2002 Volume 2002 Issue 49 Pages 131-133

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Abstract
The ragweed beetle, Ophraella communa LaSage, was attacked on ragweed plants by the predators Harmonia axyridis (Pallas) larvae and adults, chrysopid larvae, mantid larvae and adults, Piocoris varius (Uhler) adults, and Agelena opulenta L. Koch nymphs. Of the 47 prefectures in Japan, distribution of the beetle expanded to 39 prefectures by the end of 2001.
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