1 of 4 larvae observed at this site.
Fine grained sand case, approx 2mm
Oxyethira sp., to Robinson trap, Hellerup, Denmark, 4/5 June 2013
Identification based on Barnard and Ross, The adult Trichoptera (caddisflies) of Britain and Ireland. Spur formula apparently 0.3.4; forewing less than 3.5mm, tapering to sharp point. Closely resembles images of Oxyethira flavicornis(Pictet, 1834) at www.naturespot.org.uk/species/oxyethira-flavicornis
The Hydroptilidae are a large family of caddisflies (Trichoptera) with a worldwide distribution. They are commonly known as microcaddisflies or purse-case caddisflies, in reference to two characteristic traits of this family: Hydroptilidae are much smaller than other caddisflies, rarely exceeding 5 mm (0.20 in) in length. Their larvae do not build a protective case until the final instar of their growth. At that time however, they build a typically Purse-shaped case, either portable or stuck to the substrate,...