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Coleophora
alnifoliae Barasch, 1934 Brown Alder Case-bearer Coleophora alnifoliae Barasch, 1934. Dtsch. ent. Ztg.: 36. |
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Leaf-miner and case-bearer: The larva creates a succession of cases, in this instance fashioned from parts of a leaf. The final case is 11-13 mm long, slender, and fixed at 45° to the leaf surface, with anal end laterally compressed and bivalved (British leafminers). A slender, brown, spathulate leaf case, in the end about 13 mm long; mouth angle about 15°. Young case slender, not hooked (Bladmineerders van Europa). Larva: The larvae of moths have a head capsule and chewing mouthparts with opposable mandibles (see video of a gracillarid larva feeding), six thoracic legs and abdominal legs (see examples). The larva is illustrated in Bladmineerders van Europa. The case is illustrated in UKMoths, British leafminers and Bladmineerders van Europa. Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples). Adult: The adult is illustrated in UKMoths by Rob Edmunds. The species is included in mothdissection.co.uk. Hosts in Great Britain and Ireland:
Hosts elsewhere:
Time of year - larvae: Probably from September (early feeding not recorded) to November, feeding again from late May to June or July. There is also a biennial population, which aestivates and completes feeding in June or July of the second year (British leafminers). The species overwinters in a cases, in some populations twice before emerging as an adult (UKMoths). Time of year - adults: Mainly in July and August. Some populations only produce adults every two years (UKMoths). Distribution in Great Britain and Ireland: A rather local species which is slowly increasing its range. It occurs in scattered colonies in central and southern England, but also occasionally elsewhere (UKMoths); including East Kent, Glamorgan, Herefordshire, Montgomeryshire, North Somerset, Shropshire, West Gloucestershire and Worcestershire (NBN Atlas). Distribution elsewhere: Widespread in continental Europe including Austria, Belgium, Czech Republic, Danish mainland, Estonia, Finland, French mainland, Italian mainland, Latvia, Lithuania, Norwegian mainland, Poland, Romania, Sardinia, Slovakia, Slovenia, Swede, Switzerland and The Netherlands (Fauna Europaea). NBN Atlas links to known host species:
British and Irish Parasitoids in Britain and elsewhere:
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| Last updated 25-Jun-2019 Brian Pitkin |  |
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