Species profile: Limnephilus stigma

July 11, 2017

Limnephilus stigma Curtis, 1834

Limnephilus stigma is one of 39 members of the Family Limnephilidae found in Ireland, and one of 23 members of the genus Limnephilus. It is a species whose larvae can be found in ponds and marshes. Its substratum preference includes plant material, particulate organic matter, mud and sand, in standing water. Limnephilus stigma has a distinctive case made from sections of blades of grass. Its larvae can occur in brackish water and shows no preference for pH.

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

Characteristic features of the larva of Limnephilus stigma 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, anterior or posterior face of at least one femur of the 2nd and 3rd legs with one or more additional setae, two strong setae on the ventral edge of the femur of the 2nd leg, both 1st leg femur ventral setae pale, anterior third of pronotum darker than the remaining two-thirds, and the proventer with dark lateral sternites separate from the much paler  and poorly defined prosternite.

Adults of Limnephilus stigma can be found on the wing from May to October, with a summer diapause.

For details of published records of Limnephilus stigma, 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 11/07/2017

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