Agrypnia obsoleta (Hagen, 1864)

Agrypnia obsoleta is one of seven members of the Family Phryganeidae found in Ireland, and one of three representatives of the genus. It is a species whose larvae can be found in the littoral zone of lakes and ponds, having a strong preference for standing water. Its substratum preference includes mud, plants, particulate organic matter and woody debris. Agrypnia obsoleta has a rather distinctive case, made of short lengths of plant material in something of a spiral pattern. The species shows a preference for acid waters.

Agrypnia obsoleta has a univoltine reproductive cycle (one generation per year) and lives longer than one year. Its feeding ecology is mainly predatory, with some grazing/scraping and gathering of fine particulate organic matter (FPOM).

Characteristic features of the larva of Agrypnia obsoleta include the largely unsclerotized mesodorsum and metadorsum, the presence of lateral and dorsal protuberances on the 1st abdominal segment, the strongly banded head with the side bands meeting at the back of the head and running forward as far as the jaws, the presence of a prosternite, a contiguous black band across the anterior margin of the pronotum and the longitudinal arrangement of the combs on the coxa of the 2nd leg.

Adults of Agrypnia obsoleta can be found on the wing from July to October.

Records of Agrypnia obsoleta on the National Biodiversity Data Centre mapping system 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 10/07/2017

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Hydropsyche angustipennis (Pictet, 1834)

Hydropsyche angustipennis is one of nine members of the Family Hydropsychidae found in Ireland, and one of five of the genus Hydropsyche. It is a species whose larvae can be found in rivers and streams, especially at the outflows of lakes and ponds. Its substratum preference ranges from coarse gravel to boulders and bedrock, but includes plant material, in areas with moderate to high current velocities. The species shows a preference for acidic waters.

Hydropsyche angustipennis has a univoltine reproductive cycle (one generation per year) in temperate areas. Its feeding ecology is predominantly passive filter feeding, with some predation and grazing/scraping.

Characteristic features of the larva of Hydropsyche angustipennis include the presence of large, rectangular dorsal plates on all three thoracic segments, tufted gills on the abdominal segments up to and including the 7th segment, the lack of long bristles on the front margin of the pronotum, entirely dark posterior prosternites, and a frontoclypeal pattern of separated aboral and lateral marks.

Adults of Hydropsyche angustipennis can be found on the wing from June to September.

Records of Hydropsyche angustipennis 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.

O’Connor, J.P. (2015) A Catalogue and Atlas of the Caddisflies (Trichoptera) of Ireland. Occasional Publication of the Irish Biogeographical Society, No. 11.

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.

Last updated: 31/05/2016

Diplectrona felix McLachlan, 1878

Diplectrona felix is one of nine members of the Family Hydropsychidae found in Ireland, and the sole representative of the genus in Britain and Ireland. It is a species whose larvae can be found in small, cool streams and springs. The substratum preference ranges from fine gravel to boulders and bedrock, but includes woody debris, in areas with moderate to high current velocities. The species does not show a preference for a particular pH.

Diplectrona felix has a univoltine reproductive cycle (one generation per year) and lives up to one year. Its feeding ecology is predominantly passive filter feeding, with some predation and grazing/scraping.

Characteristic features of the larva of Diplectrona felix include the presence of large, rectangular dorsal plates on all three thoracic segments, tufted gills on the abdominal segments, the lack of long bristles on the front margin of the pronotum, the uniform brown colour of the dorsal surface of the head, and the transverse sutures on the 2nd and 3rd thoracic plates.

Adults of Diplectrona felix can be found on the wing from May to August.

Records of Diplectrona felix 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

Cheumatopsyche lepida (Pictet, 1834)

Cheumatopsyche lepida is one of nine members of the Family Hydropsychidae found in Ireland, and the sole representative of the genus in Britain and Ireland. It is a species whose larvae can be found in the lower reaches of large rivers.

Cheumatopsyche lepida has a univoltine reproductive cycle (one generation per year) and lives up to one year. Its feeding ecology is predominantly passive filter feeding, with some predation and grazing/scraping.

Characteristic features of the larva of Cheumatopsyche lepida include the presence of large, rectangular dorsal plates on all three thoracic segments, tufted gills on the abdominal segments and the numerous long bristles present on the front margin of the pronotum.

Adults of Cheumatopsyche lepida can be found on the wing from June to September.

Records of Cheumatopsyche lepida 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

Hydroptila angulata Mosley, 1922

Hydroptila angulata is one of 24 members of the Family Hydroptilidae found in Ireland, and one of ten representatives of the genus Hydroptila. This species can be found in still and slow-moving water of lakes, streams and rivers, including into the brackish water zone, as well as ponds. It is a habitat specialist of algae. The species inhabits a laterally flattened, seed-like case constructed with sand particles.

The larvae of Hydroptila are separated from other hydroptilids by the lack of dorsal and ventral processes, the presence of a laterally flattened case comprised of sand particles (with the exception of one unknown species that uses algal filaments), the relatively short 2nd and 3rd legs, and the presence of gill filaments on the anal proleg. As a whole, the larvae of Hydroptila, including Hydroptila angulata, are poorly described and identification requires the examination of adult material.

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

There are currently no records for Hydroptila angulata on 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: 31/05/2016