Species profile: Ceraclea annulicornis

January 5, 2017

Ceraclea annulicornis (Stephens, 1836)

Ceraclea annulicornis is one of 24 members of the Family Leptoceridae found in Ireland, and one of six members of the genus Ceraclea. It is a species whose larvae can be found in rivers and occasionally lakes, on a substratum of rocks, as well as woody debris, preferring moderate currents. The curved case of Ceraclea annulicornis is made of sand grains and has an overhanging dorsal lip. The species has no preference in terms of water pH, and can tolerate brackish water.

In temperate areas, Ceraclea annulicornis has a univoltine (one generation per year) reproductive cycle, and lives for up to one year.

Defining features of the larvae of Ceraclea annulicornis include a mesonotum with dark, curved posterior-lateral projections, mandibles no more than twice as long as wide, a quadrangular ventral apotome (though small larvae may have a squat, rounded triangle-shaped apotome), mesoventer lacking setae, metaventer with one seta on each side,  and anal proleg claws with one accessory hook.

The adults of Ceraclea annulicornis can be found on the wing from June to July.

For details of records of Ceraclea annulicornis, visit the National Biodiversity Data Centre page here.

References

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: 27/12/2016

 

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