Hydroptila cornuta Mosely, 1922

Hydroptila cornuta is one of 25 members of the Family Hydroptilidae found in Ireland, and one of 11 members of the genus Hydroptila. It is a species whose larvae can be found in rivers and streams on a substratum of algae. Hydroptila cornuta has a case made of sand grains, which is laterally compressed. Only the final instar has a case, and is very different from the earlier instars.

The larvae of most Hydroptilid species are not described. Notable features of the larvae of the genus Hydroptila include a laterally flattened abdomen, which lacks dorsal and ventral ovoid processes, a laterally compressed case made of sand grains (or in one case algal filaments), no sclerotized median point on the labrum, 2nd & 3rd legs at most 1.5 times longer the 1st legs and gill filaments on the anal proleg, the claws of which also have accessory hooks.

Adults of Hydroptila cornuta can be found on the wing from May to September.

There are currently no distribution records available for Hydroptila cornuta in Ireland through the National Biodiversity Data Centre mapping system.

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: 11/07/2016

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Hydroptila angulata Mosely, 1922

Hydroptila angulata is one of 25 members of the Family Hydroptilidae found in Ireland, and one of 11 members of the genus Hydroptila. It is a species whose larvae can be found in rivers on a substratum of algae. Hydroptila angulata has a case made of sand grains, which is laterally compressed. Only the final instar has a case, and is very different from the earlier instars. The species can be found in brackish waters.

The larvae of most Hydroptilid species are not described. Notable features of the larvae of the genus Hydroptila include a laterally flattened abdomen, which lacks dorsal and ventral ovoid processes, a laterally compressed case made of sand grains (or in one case algal filaments), no sclerotized median point on the labrum, 2nd & 3rd legs at most 1.5 times longer the 1st legs and gill filaments on the anal proleg, the claws of which also have accessory hooks.

Adults of Hydroptila angulata can be found on the wing from May to October.

For details of the published records of Hydroptila angulate, visit the National Biodiversity Data Centre 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: 11/12/2017

Beraea pullata (Curtis, 1834)

Beraea pullata is one of three members of the Family Beraeidae found in Ireland, and one of two representatives of the genus. It is a species whose larvae can be found in dense vegetation in flowing marshes, springs and margins of streams, in open rather than shaded sites. The larval case is curved and made of sand grains.

Beraea pullata has a semivoltine reproductive cycle (one generation in two year) in temperate regions and lives more than one year. Its feeding ecology is predominantly a gatherer of fine particular organic matter (FPOM), shredding of fallen leaves and plant material, with some grazing.

Characteristic features of the larva of Beraea pullata include the presence of a ventral brush of setae on the anal proleg just below the claw (which has one decumbent accessory hook), pronotum with a broadly rounded ‘flap’ on the anterior-lateral corner with an associated ridge, and a dorsal process on the anal leg which has three setae, which are one-third as long as the long seta.

Adults of Beraea pullata can be found on the wing from May to July (September).

For details of published records of Beraea pullata, 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: 11/12/2017

Beraea maurus (Curtis, 1834)

Beraea maurus is one of three members of the Family Beraeidae found in Ireland, and one of two representatives of the genus. It is a species whose larvae can be found in springs and trickles on moss and fallen leaves. The larval case is curved and made of sand grains.

Beraea maurus has a semivoltine reproductive cycle (one generation in two year) in temperate regions and lives more than one year. Its feeding ecology is mainly shredding of fallen leaves and plant material, with some grazing.

Characteristic features of the larva of Beraea maurus include the presence of a ventral brush of setae on the anal proleg just below the claw (which has two erect accessory hooks), pronotum with a broadly rounded ‘flap’ on the anterior-lateral corner with an associated ridge, and a dorsal process on the anal leg which has two setae, one half as long as the other.

Adults of Beraea maurus can be found on the wing from June to August.

For details of published records of Beraea maurus, 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 11/12/2017