Applied Entomology and Zoology (2005) 40, 31-39

Tetsuo Saito, Kazuo Hirai and Michael O. Way (2005)
The rice water weevil, Lissorhoptrus oryzophilus Kuschel (Coleoptera: Curculionidae)
Applied Entomology and Zoology 40 (1), 31-39
Abstract: The rice water weevil, Lissorhoptrus oryzophilus, was first detected in Japan in 1976 in a paddy field, in Tokoname, near Nagoya. This weevil is a recent invader and is assumed to have entered with hay from California. Ten years later, the weevil succeeded in spreading throughout all Japanese paddy fields and also expanded to Korean, Taiwan and east China. The rice water weevil now is regarded as one of the common insect pests of rice in these areas. Investigations on taxonomy, biology, population dynamics, damage and economic importance, estimation of population density and forecasting, and control are reviewed.
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Research topic(s) for pests/diseases/weeds:
new introduction of pest
quarantine treatments/regulations/aspects

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Lissorhoptrus oryzophilus	Rice (Oryza)	China (south)
	Lissorhoptrus oryzophilus	Rice (Oryza)	Japan
	Lissorhoptrus oryzophilus	Rice (Oryza)	Korea-South
	Lissorhoptrus oryzophilus	Rice (Oryza)	Taiwan