Species profile: Ceraclea nigronervosa

January 8, 2017

Ceraclea nigronervosa (Retzius, 1783)

Ceraclea nigronervosa 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 lakes, rivers and streams, on a substratum of sponges on rocks and woody debris, in standing or slow-flowing water. The case of Ceraclea nigronervosa is made of secreted flexible material with bands of embedded sand grains. The species has no preference in terms of water pH.

In temperate areas, Ceraclea nigronervosa has a univoltine (one generation per year) reproductive cycle, and lives for up to one year. The larvae feed on sponges.

Defining features of the larvae of Ceraclea nigronervosa 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 at least two setae on each side, and 9th abdominal segment with two groups of four setae on the dorsal side.

The adults of Ceraclea nigronervosa can be found on the wing from May to August (September).

For details of records of Ceraclea nigronervosa, 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: 08/01/2017

 

 

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