Limnephilus coenosus Curtis, 1834

Limnephilus coenosus is one of 40 members of the Family Limnephilidae found in Ireland, and one of 24 members of the genus Limnephilus. It is a species whose larvae can be found in small permanent pools in bogs. Its substratum preference includes plant material, particulate organic matter, mud and sand, in standing water. Limnephilus coenosus has a straight or curved case made of plant fragments. Its larvae can occur in brackish water.

The feeding ecology of the larvae of Limnephilus coenosus is predominantly shredding, with some predation and grazing.

Characteristic features of the larva of Limnephilus coenosus include a prosternal horn, dorsal protuberance on the 1st abdominal segment, antenna midway between the eye and the anterior head margin, some gills with three or more filaments, no femur of the 2nd and 3rd legs with one or more additional setae and the proximal section of the trochanter of the 2nd or 3rd legs with at least one additional seta.

Adults of Limnephilus coenosus can be found on the wing in Ireland in (August) September, though this is based on limited records. The flight period in Britain is given as July to October.

For details of published records of Limnephilus coenosus, 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 07/12/2017

 

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