Food Plant: Acer campestre (Field Maple), A.pseudoplatanus (Sycamore), Acer platanoides (Norway Maple) Elsewhere: A.saccharinum (Silver Maple)

Egg: Underside, usually close to a vein.

Mine: June-July, increasingly bivoltine (especially in Southern England)

Pupa: In a silken cocoon on either side of leaf

Notes: C.hauderi is now known to be the spring generation of C.semifascia in the UK ( Langmaid et al (2011) Nota Lepidopterologica 33, 191-197). Early mine a gallery leading to a squarish blotch. Later forms up to three successive tubes or cones by folding the tips of leaves downwards (compare with C.hauderi which forms cones, not cylinders as above). The moth must be bred to identify.

National Status: Local

Bradley No: 290

Data: 14.vi.2004, Hartley Wintney, Hants, VC12

Image:© Rob Edmunds

References:
Plant C, (2022), The Status of Caloptilia honoratella (Rebel, 1914) and Caloptilia hemidactylella ([Denis & Schiffermüller}, 1774) in Britain with a note on two similar additional Acer-feeding Caloptilia that might appear in Britain (Lep,; Gracillariidae). Entomologist's Rec. J. Var. 134;1, 21-39