Abstract
The strawberry root weevil, Brachyrhinus ovatus(L.), is a serious agricultural pest of many perennial crops in the Pacific Northwest. Although primarily a pest of strawberry, this species can cause considerable damage to cane fruits, nursery plantings, and several specialty crops, such as peppermint and hops. The most serious damage is caused by overwintering larvae which feed on the root system, often intermittently throughout the winter months, depending on soil temperature. Adults, which emerge in May or June, feed on leaves and stems of plants, but this injury is not serious. Following spring emergence, there is a 2-week period before adults begin oviposition, which continues for several months during the summer. Eggs hatch after an average incubation period of 18 days, and the young larvae work their way into the soil and begin feeding on plant roots. The seasonal life history of this species in the Pacific Northwest was reported by Treherne (1914), Wilcox et al. (1934), and Vaughan and Rosenstiel (1944).