Species profile: Oxyethira flavicornis

July 17, 2016

Oxyethira flavicornis (Pictet, 1834)

Oxyethira flavicornis is one of 25 members of the Family Hydroptilidae found in Ireland, and one of six members of the genus Oxyethira. It is a species whose larvae can be found in bogs, ponds and lakes. Oxyethira flavicornis has a case made of silk secretions, which is laterally compressed and has a narrow anterior opening and broad posterior opening. Only the final instar has a case, and is very different from the earlier instars. This species can be found in brackish waters.

The species is bivoltine (two generations per year) in temperate areas.

The larvae of most Hydroptilid species are not described. Defining features of the final instar of the larvae of the genus Oxyethira is the absence of dorsal and ventral ovoid processes on the abdomen, no lateral protuberances on the 2nd abdominal segment, no median sclerotized point on the labrum, 2nd and 3rd legs 2-3 times as long as 1st leg, and a case as above.

Adults of Oxyethira flavicornis can be found on the wing from April to September.

There are currently no distribution records available for Oxyethira flavicornis 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: 17/07/2016

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: