Species profile: Polycentropus flavomaculatus

August 4, 2016

Polycentropus flavomaculatus (Pictet, 1834)

Polycentropus flavomaculatus is one of eleven members of the Family Polycentropodidae found in Ireland, and one of three members of the genus Polycentropus. It is a species whose larvae can be found in streams, rivers and stony lakes. Its substratum preference includes rocks, boulders, bedrock, plants, mosses and particulate organic matter. This species shows a preference acidic water, and can be found in brackish water areas.

The feeding ecology of Polycentropus flavomaculatus is predominantly predation, with a small amount of passive filter feeding, using nets. The species lives for more than one year and is univoltine (one generation per year) in temperate regions.

Characteristic features of the larva of Polycentropus flavomaculatus include a basal membranous section of the anal proleg equal in length to the distal sclerotized section, right-angled anal claws without four blunt teeth on the inside edge, tarsus of the 1st leg less than half the length of the tibia and pigmented areas on the dorsal surface of the head.

Adults of Polycentropus flavomaculatus can be found on the wing from April to September.

For distribution records of Polycentropus flavomaculatus, visit the National Biodiversity Data Centre page here.

Polycentropus flavomaculatus


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.

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: 08/04/2018


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