Agraylea sexmaculata Curtis, 1834

Agraylea sexmaculata is one of 24 members of the Family Hydroptilidae found in Ireland, and one of two representatives of the genus, along with Agraylea multipunctata. This species can be found in still and slow-moving water of lakes and rivers, as well as weedy ponds and is habitat specialist of algae. The species inhabits a laterally flattened, seed-like case incorporating algal filaments separated by secreted material. In temperate areas, Agraylea sexmaculata exhibits a bivoltine reproductive pattern.

The larvae of the genus Agraylea are separated from other hydroptilids by the lack of dorsal and ventral processes, the presence of a laterally flattened case comprised of algal filaments, the relatively short 2nd and 3rd legs, and the lack of gill filaments on the anal proleg. The separation of A. sexmaculata from A. multipunctata is based on the presence of a distinct pattern of spots on the mesonotum and metanotum of the former, while the latter has a band of colour at the posterior of the mesonotum and metanotum (and sometimes the head and pronotum).

Adults of Agraylea sexmaculata can be found on the wing from May to September.

Records of Agraylea sexmaculata on the National Biodiversity Data Centre can be found 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: 31/05/2016

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Agraylea multipunctata Curtis, 1834

Agraylea multipunctata is one of 24 members of the Family Hydroptilidae found in Ireland, and one of two representatives of the genus, along with Agraylea sexmaculata. This species can be found in still and slow-moving water of lakes and rivers, as well as weedy ponds and is habitat specialist of algae. The species inhabits a laterally flattened, seed-like case incorporating algal filaments separated by secreted material. Agraylea multipunctata is thought to exhibit a bivoltine reproductive pattern.

The larvae of the genus Agraylea are separated from other hydroptilids by the lack of dorsal and ventral processes, the presence of a laterally flattened case comprised of algal filaments, the relatively short 2nd and 3rd legs, and the lack of gill filaments on the anal proleg. The separation of A. multipunctata from A. sexmaculata is based on the presence of a distinct pattern of spots on the mesonotum and metanotum of the latter, while the former has a band of colour at the posterior of the mesonotum and metanotum (and sometimes the head and pronotum).

Adults of Agraylea multipunctata can be found on the wing from April to October.

Records of Agraylea multipunctata on the National Biodiversity Data Centre website can be found 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: 31/05/2016

Ecnomus tenellus (Rambur, 1842)

Ecnomus tenellus is only members of the Family Ecnomidae found in Ireland. This species can be found in still and sometimes slow-moving water of lakes and rivers. It is a free-living species and so does not build a case like many other caddisfly larvae, feeding almost entirely by active predation will a small amount of passive filter feeding. In temperate latitudes, Ecnomus tenellus exhibits a univoltine reproductive pattern and has a lifespan of up to one year.

The larvae of Ecnomus tenellus can be identified by its lack of gills and the presence of large, hard, sclerotized plates on the 2nd & 3rd thoracic segments, which are rectangular in shape. The species has a prominent lateral fringe along the abdominal segments.

Adults of Ecnomus tenellus can be found on the wing from June to October.

Records of Ecnomus tenellus on the National Biodiversity Data Centre website can be found here.

References

Barnard, P. and Ross, E. (2012) The Adult Trichoptera (Caddisflies) of Britain and Ireland. RES Handbook Volume 1, Part 17.

Edington, J.M. and Hildrew, A.G. (1995) A Revised Key to the Caseless Caddis Larvae of the British Isles: with notes on their ecology. Freshwater Biological Association Special Publication No. 53.

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.

Last updated: 31/05/2016