Species profile: Lype reducta

January 16, 2017

Lype reducta (Hagen, 1868)

Lype reducta is one of nine members of the Family Psychomyiidae found in Ireland, and one of two members of the genus Lype. It is a species whose larvae can be found in marshes, streams and rivers on a substratum of woody debris, building galleries of wood fragments and sand held together by silk. The species has no preference with regard to current, but shows a preference for neutral to alkaline water.

In terms of feeding ecology, the larvae are mainly grazers, with some feeding on woody debris.

Defining features of the larvae of Lype reducta include a lack of abdominal gills, labrum comprising a sclerotized plate, lateral plates on the 2nd and 3rd thoracic segments small, anal prolegs with almost no basal membranous section, pronotum lacking black thickening towards the posterior-lateral corner, anterior section of coxopleurite with one vertical black bar and a frontoclypeus with a pale anterior region and dark posterior region.

The adults of Lype reducta can be found on the wing in (April) June to August.

For details of records of Lype reducta, visit the National Biodiversity Data Centre page here.

Lype reducta


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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