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Caloptilia semifascia
Maple Slender
Wingspan 10 to 12 mm. The angled light streak starting at the leading edge of the forewing is characteristic, but it can be obscured on darker specimens.
Wherever Acer species are present, notably Field Maple, Sycamore or Norway Maple.
Flies from late July to October and again, after hibernating, until May.
Has been recorded on various Acer spp., including Field Maple, Sycamore and Norway Maple. Caloptilia spp. mines & cones on Acer spp. are no longer considered to be reliably identifiable without rearing to adult for det. This follows the colonisation of Caloptilia honoratella and the re-colonisation of Caloptilia hemidactylella, a re-appraisal of foodplant preferences, plus potential for colonisation by other European Acer-feeding Caloptilia spp.
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
It is widespread in southern England and South Wales, but Outlying populations occur in Caernarvonshire-Denbighshire and in Cumbria-Yorkshire. In the Butterfly Conservation's Microlepidoptera Report 2011 this species was classified as local.
Occasional in Leicestershire and Rutland.
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Species profile
- Common names
- Maple Slender
- Species group:
- Moths
- Kingdom:
- Animalia
- Order:
- Lepidoptera
- Family:
- Gracillariidae
- Records on NatureSpot:
- 31
- First record:
- 07/08/2014 (Baker, Rodney)
- Last record:
- 22/11/2023 (Graves, Hazel)
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