Species profile: Hydropsyche siltalai

January 7, 2016

Hydropsyche siltalai Doehler, 1963

Hydropsyche siltalai is one of nine members of the Family Hydropsychidae found in Ireland, and one of five of the genus Hydropsyche. It is a species whose larvae can be found in streams and rivers. Its substratum preference ranges from coarse gravel to boulders and bedrock, but includes plant material and woody debris, in areas with moderate to high current velocities. It shows no preference for pH.

Hydropsyche siltalai lives for up to one year and has a univoltine reproductive cycle (one generation per year) in temperate areas. Its feeding ecology is mainly passive filter feeding, with some predation and grazing.

Characteristic features of the larva of Hydropsyche siltalai include the presence of large, rectangular dorsal plates on all three thoracic segments, the lack of long bristles on the front margin of the pronotum and tufted gills on the abdominal segments with the exception of the 7th segment.

Adults of Hydropsyche siltalai can be found on the wing from June to September.

Records of Hydropsyche siltalai on the National Biodiversity Data Centre website can be found here.

Hydropsyche siltalai


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.

Last updated: 08/04/2018


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