Yorkshire Status: Very rare and local resident.

This is an uncommon moth in Yorkshire, and we have few records. Several of these are from the 19th Century and appear in Porritt's lists - from Scarborough, Askham Bog and Skipwith. Thomas Wilkinson, writing about the Askham Bog record from 1885 in The Naturalist 11:306 says "this rare case bearer I was pleased to find in the autumn of last year amongst birch. They were not plentiful, as I only found two, and the case was formed of half a withered leaf, the remaining half being left unrolled up." It was over 100 years before it appeared again, at Rossington in 1999, and since then there have been scattered records from a handful of other sites, both of larval cases and dissected adults.

The usual food plant is birch, but it can also feed on hawthorn, apple or rowan in the UK. Full-fed larvae are most frequently found in July. The second and third cases are formed by cutting out a very large mine, rolling over one edge as a wrapping for a silken tube and leaving the rest as an appendage, the whole looking like a withered leaf as the scientific name suggests. It is very easy to overlook and mistake for a brown bit of leaf!

	Determination by Genitalia Examination (gen. det.) Required

Recorded in 8 (4%) of 200 10k Squares. First Recorded in 1868. Last Recorded in 2024. Additional Stats

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