Species profile: Limnephilus marmoratus

July 10, 2017

Limnephilus marmoratus Curtis, 1834

Limnephilus marmoratus 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 a wide range of habitats including rivers, lakes, ponds, bog pools and ditches. Its substratum preference includes plant material, particulate organic matter, mud and sand, in standing or, occasionally, slow-flowing water. Limnephilus marmoratus has a case made of plant fragments. Its larvae can occur in brackish water.

In temperate areas, Limnephilus marmoratus has a univoltine (one generation per year) reproductive cycle. The feeding ecology of its larvae is predominantly shredding, with some predation and grazing.

Characteristic features of the larva of Limnephilus marmoratus 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, proventer  with lateral sternites fused with prosternite, additional setae present on femoral faces of 2nd and 3rd legs and no gills on the 8th abdominal segment.

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

For details of published records of Limnephilus marmoratus, 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 10/07/2017

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