Species profile: Hydroptila angulata

October 6, 2015

Hydroptila angulata Mosley, 1922

Hydroptila angulata is one of 24 members of the Family Hydroptilidae found in Ireland, and one of ten representatives of the genus Hydroptila. This species can be found in still and slow-moving water of lakes, streams and rivers, including into the brackish water zone, as well as ponds. It is a habitat specialist of algae. The species inhabits a laterally flattened, seed-like case constructed with sand particles.

The larvae of Hydroptila are separated from other hydroptilids by the lack of dorsal and ventral processes, the presence of a laterally flattened case comprised of sand particles (with the exception of one unknown species that uses algal filaments), the relatively short 2nd and 3rd legs, and the presence of gill filaments on the anal proleg. As a whole, the larvae of Hydroptila, including Hydroptila angulata, are poorly described and identification requires the examination of adult material.

Adults of Hydroptila angulata can be found on the wing from May to October).

There are currently no records for Hydroptila angulata on the National Biodiversity Data Centre mapping system.


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

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.

Wallace, I.D., Wallace, B. and Philipson, G.N. (2003) Keys to the Case-bearing Caddis Larvae of Britain and Ireland. Scientific Publication of the Freshwater Biological Association No. 61.

Last updated: 31/05/2016


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