Species Details

ABH: 15.012

BF: 290

Family: Gracillariidae

Subfamily: Gracillariinae

Taxon: Caloptilia semifascia

=Caloptilia hauderi sens. auctt.

=Caloptilia pyrenaeella

Authority: (Haworth, 1828)

Vernacular: Maple Stilt

Account: Local in woodland edges and hedgerows in southern England and Wales, widespread, but tending to occur in isolated but sometimes populous colonies; absent from the north Midlands, but reappearing in Yorkshire and Cumbria. Since the synonymisation of C. hauderi into the present species, it is apparent that the adult is bivoltine, with a small first generation in spring, followed by a main emergence from July through September, remaining active into October before overwintering into the next year (Nota Lep. (2011), J.R.Langmaid).
Imagos are taken at light, but even more so as larval mines in the leaves of Field Maple, subsequently living within a leaf-fold.

Accounts provided by and used with the kind permission of Mike Wall, Hampshire County Moth Recorder. These will in due course be gradually replaced with species accounts with a Surrey context.

Wingspan: 10 — 12 mm

Surrey Flight Period: —

The flight period of overwintering adults are not given. See the flight chart below the distribution map.

Foodplant: Acer campestre (Field Maple), Acer pseudoplatanus (Sycamore).

Foodplant accounts are from the HOSTS database — Natural History Museum, London, UK. (CC0).

Status: Local

UK BAP:

WCA:

Click here to view the full geology map of Surrey.

Verification Grade: 2 — Care needed to identify, an image may be required 🤔
Further Information: https://www.ukmoths.org.uk/species/caloptilia-semifascia/
Statistics

* Based on adult records only.

Records: 127

Individuals: 6

Earliest Year: 2001

Latest Year: 2025

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