(Humphreys & Westwood, 1845)
The larvae feed on Circaea alpina and Circaea lutetiana. They mine the leaves of their host plant. The mine starts as a long, narrow, full depth, strongly spiral corridor. The frass is initially deposited in fine grains, but later in a central line. The larva leaves the mine to start elsewhere, either as a continuation of the existing corridor or in a new leaf. This new mine starts as a narrow corridor but soon widens into a large blotch. The frass is deposited in a broad band. Pupation takes place outside of the mine. Larvae can be found from mid-August to mid-September. They are whitish with a light brown head.
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