Coleophora longicornella Constant, 1893
The larva makes a gallery of up to six cm in the midrib, from where generally some secondary galleries branch off under a right angle into the leaf. During feeding pauses the larva rests in the midrib. Most frass is accumulated in the first section of the gallery, in the midrib also. The larva makes several mines. After leaving a mine a case is made, that, upon penetrating a leaf for a new mine, is left behind on the leaf, and easily drops off. The final case is a yellow-brown tubular silken case of 6-8 mm long, with a mouth angle of c. 30°.
Asteraceae, narrowly monophagous
two generations, very exceptional for a Coleophora. Szőcs (1974a) found active larvae in the first half of July and from mid-Agust to November; adults in May-first half of June and second half of July, respectively.
distribution within Europe
From France to Italy, Greece and Hungary (Fauna Europaea, 2009).
pale yellow, head light brown, thoracic shield very light brown, anal shield blackish brown.
Baldizzone (1978c), Baldizzone & van der Wolf (2000a), Hering (1957a), Kasy (1965a), Suire (1961a), Szőcs (1974a, 1977am 1981a), Toll (1962a).