Species profile: Holocentropus picicornis

July 30, 2016

Holocentropus picicornis (Stephens, 1836)

Holocentropus picicornis is one of eleven members of the Family Polycentropodidae found in Ireland, and one of two of the genus Holocentropus. It is a species whose larvae can be found in ponds, lakes, canals and other still waters. Its substratum preference is for plants and mosses and this species can be found in brackish water areas.

Holocentropus picicornis lives for up to one year and is univoltine (one generation per year) in temperate regions. Its feeding ecology is predominantly predation, with a small amount of passive filter feeding, using tubular nets attached to plants.

Characteristic features of the larva of Holocentropus picicornis include a basal membranous section of the anal proleg equal in length to the distal sclerotized section, the tarsus and tibia of the 1st leg of about equal length, right-angled anal claws and dark bands on the dorsal surface of the head capsule (a feature shared by Holocentropus stagnalis, which has not been confirmed for Ireland).

Adults of Holocentropus picicornis can be found on the wing from May to September.

For distribution records of Holocentropus picicornis, visit the National Biodiversity Data Centre page here.

References

Barnard, P. and Ross, E. (2012) The Adult Trichoptera (Caddisflies) of Britain and Ireland. RES Handbook Volume 1, Part 17.

Edington, J.M. and Hildrew, A.G. (1995) A Revised Key to the Caseless Caddis Larvae of the British Isles: with notes on their ecology. Freshwater Biological Association Special Publication No. 53.

O’Connor, J.P. (2015) A Catalogue and Atlas of the Caddisflies (Trichoptera) of Ireland. Occasional Publication of the Irish Biogeographical Society, No. 11.

Graf, W., Murphy, J., Dahl, J., Zamora-Muñoz, C. and López-Rodríguez, M.J. (2008) Distribution and Ecological Preferences of European Freshwater Species. Volume 1: Trichoptera. Astrid Schmidt-Kloiber & Daniel Hering (eds). Pensoft, Sofia-Moscow.

O’Connor, J.P. (2015) A Catalogue and Atlas of the Caddisflies (Trichoptera) of Ireland. Occasional Publication of the Irish Biogeographical Society, No. 11.

Last updated: 30/07/2016

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