Ecclisopteryx dalecarlica Kolenati, 1848

Ecclisopteryx dalecarlica is one of 39 members of the Family Limnephilidae found in Ireland, and the sole member of the genus Ecclisopteryx. It is a species whose larvae can be found in rivers and larger streams. Its substratum preference is for stony material from gravel to cobbles and boulders, in moderate to fast flowing water. Ecclisopteryx dalecarlica has a curved case made of mineral grains. The species can be found in brackish waters.

The feeding ecology of the larvae of Ecclisopteryx dalecarlica is almost entirely grazing, with small amounts of shredding and gathering.

Characteristic features of the larva of Ecclisopteryx dalecarlica include a prosternal horn, dorsal protuberance on the 1st abdominal segment, antenna midway between the eye and the anterior head margin, gills with only single filament, two central anterior-median sclerites on the metadorsum, no teeth along the mandible edges, additional setae on femoral faces, lateral protuberance without a posterior sclerite and a group of pale setae between the eye and the frontoclypeal apotome.

Adults of Ecclisopteryx dalecarlica can be found on the wing from May to June.

For details of distribution records of Ecclisopteryx dalecarlica in Ireland available through the National Biodiversity Data Centre mapping system, click 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: 19/07/2017

Drusus annulatus (Stephens, 1837)

Drusus annulatus is one of 39 members of the Family Limnephilidae found in Ireland, and the sole member of the genus Drusus. It is a species whose larvae can be found in streams and rivers, or rarely on lake shores. Its substratum preference is for stony material from gravel to cobbles and boulders, in moderate to fast flowing water. Drusus annulatus has a curved case made of mineral grains.

In temperate areas, Drusus annulatus has a univoltine (one generation per year) or bivoltine (two generations per year) reproductive cycle, and lives for up to one year. The feeding ecology of the larvae of Drusus annulatus is almost entirely grazing, with small amounts of shredding and gathering.

Characteristic features of the larva of Drusus annulatus include a prosternal horn, dorsal protuberance on the 1st abdominal segment, antenna midway between the eye and the anterior head margin, gills with only single filament, two central anterior-median sclerites on the metadorsum, no teeth along the mandible edges, additional setae on femoral faces, lateral protuberance without a posterior sclerite and no group of pale setae between the eye and the frontoclypeal apotome.

Adults of Drusus annulatus can be found on the wing from (May) July to October.

For details of distribution records of Drusus annulatus in Ireland available through the National Biodiversity Data Centre mapping system, click 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: 18/07/2017

Halesus digitatus (Shrank, 1781)

Halesus digitatus is one of 39 members of the Family Limnephilidae found in Ireland, and one of two members of the genus Halesus. It is a species whose larvae can be found in streams and rivers. Its substratum preference is for particulate organic matter and woody debris, in slow-flowing and standing water. Halesus digitatus has a case that is made of plant fragments and may incorporate long sticks. The larvae have a preference for neutral to alkaline water.

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

Characteristic features of the larva of Halesus digitatus include a prosternal horn, dorsal protuberance on the 1st abdominal segment, antenna midway between the eye and the anterior head margin, gills with only single filaments, two anterior-median sclerites on the metadorsum, mandibles with teeth along the edges and setae proximal to the large primary seta on at least one femur of the 2nd and 3rd legs. Separation from Halesus radiatus is based on a range of features and may not always be possible.

Adults of Halesus digitatus can be found on the wing from September to November.

For details of distribution records of Halesus digitatus in Ireland available through the National Biodiversity Data Centre mapping system, click 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: 17/07/2017

Halesus radiatus (Curtis, 1834)

Halesus radiatus is one of 39 members of the Family Limnephilidae found in Ireland, and one of two members of the genus Halesus. It is a species whose larvae can be found in rivers, streams and lakes. Its substratum preference is for particulate organic matter and woody debris, in slow-flowing and standing water. Halesus radiatus has a case that is made of plant fragments and may incorporate long sticks. The larvae have no preference in relation to the water’s pH and can be found in brackish waters.

In temperate areas, Halesus radiatus 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 Halesus radiatus include a prosternal horn, dorsal protuberance on the 1st abdominal segment, antenna midway between the eye and the anterior head margin, gills with only single filaments, two anterior-median sclerites on the metadorsum, mandibles with teeth along the edges and setae proximal to the large primary seta on at least one femur of the 2nd and 3rd legs. Separation from Halesus digitatus is based on a range of features and may not always be possible.

Adults of Halesus radiatus can be found on the wing from July to November.

For details of distribution records of Halesus radiatus in Ireland available through the National Biodiversity Data Centre mapping system, click 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: 17/07/2017

Hydatophylax infumatus (McLachlan, 1865)

Hydatophylax infumatus is one of 39 members of the Family Limnephilidae found in Ireland, and the sole member of the genus Hydatophylax. It is a species whose larvae can be found in rivers, streams and occasionally lakes. Its substratum preference is for particulate organic matter and woody debris, in slow-flowing and standing water. Hydatophylax infumatus has a case made from plant fragments in early instars and dead wood in instar V. The larvae have a preference for acidic water.

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

Characteristic features of the larva of Hydatophylax infumatus include a prosternal horn, dorsal protuberance on the 1st abdominal segment, antenna midway between the eye and the anterior head margin, gills with only single filaments and a single anterior-median sclerite on the metadorsum (central area of sclerite may be pale).

Adults of Hydatophylax infumatus have only been found on the wing in Ireland during August, based on a single record, while in Britain the flight period is described as June to July.

For details of distribution records of Hydatophylax infumatus in Ireland available through the National Biodiversity Data Centre mapping system, click 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: 16/07/2017

Chaetopteryx villosa (Fabricius, 1798)

Chaetopteryx villosa is one of 39 members of the Family Limnephilidae found in Ireland, and the sole member of the genus Chaetopteryx. It is a species whose larvae can be found in rivers, streams and small upland lakes. Its substratum preference includes particulate organic matter, and stony material from gravel to boulders, in slow-flowing and standing water. Chaetopteryx villosa has a case that can be made entirely of plant fragments, but often incorporates coarse sand. The larvae have a preference for acidic water.

In temperate areas, Chaetopteryx villosa generally has a univoltine (one generation per year) reproductive cycle, but this may extend to two years. The feeding ecology of its larvae is predominantly shredding, with some grazing, gathering and predation.

Characteristic features of the larva of Chaetopteryx villosa include a prosternal horn, dorsal protuberance on the 1st abdominal segment, antenna midway between the eye and the anterior head margin, gills with only single filaments, two anterior-median sclerites on the metadorsum, mandibles with teeth along the edges, no setae proximal to the large primary seta on the femurs of the 2nd and 3rd legs, 1st abdominal protuberance lacking anterior setae, but with a large posterior sclerite with 1-3 holes, and anterior intermediate setae of 9th abdominal sclerite shorter than the central intermediate setae. Further separation from Potamophylax rotundipennis depends on head-width and other features.

Adults of Chaetopteryx villosa can be found on the wing from September to October (December).

For details of distribution records of Chaetopteryx villosa in Ireland available through the National Biodiversity Data Centre mapping system, click 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: 15/07/2017

Limnephilus incisus Curtis, 1834

Limnephilus incisus 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 pools, lakes and slow-flowing ditches, which may shrink or dry out in summer. Limnephilus incisus has a straight case made from abutted or overlapping pieces of plant material. Its larvae show a preference for neutral to alkaline waters.

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

The larvae of Limnephilus incisus cannot be reliably separated from the larvae of Limnephilus affinis, so adult material is required.

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

For details of published records of Limnephilus incisus, 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 14/07/2017