Species profile: Oxyethira frici

July 18, 2016

Oxyethira frici Klapálek, 1891

Oxyethira frici is one of 25 members of the Family Hydroptilidae found in Ireland, and one of six members of the genus Oxyethira. It is a species whose larvae can be found in streams and rivers. Oxyethira frici has a case made of silk secretions, which is laterally compressed and has a narrow anterior opening and broad posterior opening. Only the final instar has a case, and is very different from the earlier instars. This species can be found in brackish waters.

The larvae of most Hydroptilid species are not described. Defining features of the final instar of the larvae of the genus Oxyethira is the absence of dorsal and ventral ovoid processes on the abdomen, no lateral protuberances on the 2nd abdominal segment, no median sclerotized point on the labrum, 2nd and 3rd legs 2-3 times as long as 1st leg, and a case as above.

Adults of Oxyethira frici can be found on the wing from May to October.

Records of Oxyethira frici on the National Biodiversity Data Centre mapping system can be found here.

Oxyethira frici


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

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: 15/03/2018


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