Ground Beetles of Ireland

Acupalpus parvulus

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Acupalpus parvulus
© Roy Anderson
Acupalpus parvulus
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(Maps updated 30th November 2009)

Acupalpus parvulus (Sturm, 1825)

Description: A small (3-4mm) brownish-black ground beetle with paler spots. Lives among lush vegetation at the margins of freshwater, usually in acid conditions. Very rare in Ireland.

World Distribution: A Eurosiberian Wide-temperate species (64) found across Europe except the extreme north, and east to the Caucasus, Turkestan and western Siberia.

Irish Status: Johnson & Halbert (1902) cite records for Lowry's Lough, Armagh, Ballyscanlan Lake, Waterford, and Cobh, Mid Cork. The Cobh record may refer to another, similar, but halobiont species, A. elegans, for which the habitat would appear more suitable. A. parvulus has not been refound on recent visits to the other two localities. A female, which could not with certainty be separated from A. elegans was taken by Good & Butler (1998) at Tacumshin Lake, Wexford. More work is needed to clarify the status of A. elegans in Ireland before it can be included with certainty on an Irish List. However, there is a recent confirmed record of A. parvulus for Lough Caragh, Kerry (Owen 1997)

Ecology: A hygrophilous species recorded from rich vegetation on the periphery of lakes in southern and western Ireland. There are few records overall, and we know of only one in recent years, for Lough Caragh, Kerry (Owen, 1997).