Ground Beetles of Ireland

Trechus fulvus

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Trechus fulvus
© Roy Anderson
Trechus fulvus
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(Maps updated 30th November 2009)

Trechus fulvus Dejean, 1831

Description: Small (5-6mm), yellowish-red ground beetle living under stones on rocky or sandy sea shores, more or less at the high water mark. More or less subterranean. Very local but probably overlooked.

World Distribution: An Oceanic Southern-temperate species (81) restricted to coastal areas from extreme south-west Norway through the British Isles to France, western Iberia and the Azores.

Irish Status: Coastal, very local and usually subterranean. A single specimen was taken (1994) during a speleological survey of a coastal cave system at Carnlough, Antrim.

Ecology: This species is coastal, but like many Trechus, has a tendency to be hypogeal, sometimes troglophilous, for example at its Carnlough site. Elsewhere in Ireland, it is reported from the upper parts of stony beaches or by springs along the coast. The Irish form, subsp. fulvus Dejean, is not an obligate troglophile, but there are several fully troglophilous subspecies in Iberia and Madeira (Serrano & Borges, 1995).