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© Roy Anderson
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(Maps updated 30th November 2009)
Bembidion atrocaeruleum Stephens, 1828
Description: Small (4.5-5.5mm) black ground beetle with bluish reflections, typical of gravel beds along rivers.
World Distribution: A difficult species to classify using Preston and Hill's rules (1997). Possibly best described as Suboceanic Boreal-montane (42), distributed from Germany, Austria and the British Isles through France to the Iberian Peninsula.
Irish Status: Widely distributed in hill districts.
Ecology: A riparian species recorded from gravelly or shingly upland streambanks, and tending to be local even in suitable areas such as the Sperrin Mountains. Unlike the related and very similar B. tibiale, it has not been reported from shaded habitats, but it overlaps extensively with that species in open habitats (44% of sites also occupied by B. tibiale).