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IntroductionThis small family, established by Wallengren (1891), is comprised of 7 genera and about 50 species. It reaches its greatest diversity in the western Palearctic region, where 5 genera occur (Beraea Stephens, Beraeamyia Mosely, Ernodes Wallengren, Beraeodes Eaton, and Beraeodina Mosely, the latter 2 monotypic). The genus Beraea also occurs in eastern North America, where 3 species are known. A single genus, Notoernodes, with 2 species, occurs in Tanzania. Elsewhere the family is found only in Japan, where it is represented by the genus, Nippoberaea Botosaneanu, Nozaki, & Kagaya, containing a single species, N. gracilis (Nozaki & Kagaya). Gut contents of Beraea gorteba Ross in southeastern North America included small pieces of vascular plants, fungal mycelia, and other organic material, but no animal parts (Hamilton 1985), foodstuffs probably typical of most species in the family. From Holzenthal et al. (2007).