First Record of Dufouriellus ater (Dufour) (Heteroptera: Anthocoridae) from Japan, an Adventive Natural Enemy of Stored Food Insect Pests

Abstract

An anthocorid bug species, Dufouriellus ater (Dufour, 1833), which was abundantly collected by light trap for stored food insect pests in a factory in Gunma Prefecture, is recorded from Japan for the first time. This species is known mainly from the Holarctic Region, and recently introduced to the South America and Hawaii. Introduced populations in North America and Hawaii have been found from stored products and wood products. It is assumed that this species has been accidentally introduced to Japan recently as its occurrence is mainly restricted to certain areas in Kantô District. Brief notes on the diagnostic characters and biological information are also provided.