Biological Notes on the Predaceous Earwig Labidura riparia (Pallas), a Recent Immigrant to California [Dermaptera: Labiduridae]1

Abstract
The occurrence of a beneficial predaceous earwig in California is noted. Its rather restricted distribution in the agricultural valleys of southeastern California is given, together with reasons for this restriction. Rearing, burrow construction, mating, oviposition, longevity, feeding habits, and food preferences are discussed Litter-or soil-inhabiting insects and lepidopterous larvae and pupae were found to be the preferred foods,

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