Ground Beetles of Ireland


Bembidion cruciatum

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Bembidion cruciatum
© Roy Anderson
Bembidion cruciatum
© Roy Anderson
Bembidion cruciatum
W. W. Fowler
Bembidion cruciatum
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(Maps updated 30th November 2009)
 

Bembidion cruciatum Dejean, 1831

Description: 4.5-5.5mm long black ground beetle with 4 orange-brown spots on the elytra. On gravel banks of rivers, also sometimes on the seashore. Very local.
 

World Distribution: Eurosiberian Wide-temperate (64) as various subspecies are distributed across most of Europe to the Caucasus and western Siberia.
 

Irish Status: Crawford (1936) recorded this species from a marshy streambank at Newtownards Down. Specimens in the National Museums & Galleries of Northern Ireland,Ulster Museum so labelled are all B. tetracolum (R. Anderson). Genuine B. andreae has been recorded from gravelly streambanks on the River Dodder, Dublin (Johnson & Halbert, 1902; Anderson, 1987). Very recently (September 2000) a specimen was taken on a tributary of the River Roe in the Sperrins, Londondery so it may have a wider distribution. Possibly overlooked due to confusion with similar species. Luff (1998) records it as scattered across the north and west of Britain.
 

Ecology: Primarily recorded from sand or fine gravel riparian habitats up to moderate altitudes.