Transient resident and migrant.
Flies August and October to May, imago hibernating.
Larvae on Convolvulus arvensis and occasionally Calystegia sepium and Ipomaea spp. feeding in July/August and September at first in a gallery with black frass, then making fresh white blotch mines in a leaf, ejecting the frass which is often caught in strands of silk under the leaf. The larva is white with purple spots.
Seems to be completely absent for a number of years, but occasionally mines become locally common, presumably after an invasion of migrants. Sometimes they overwinter and persist for a year or two:

	Mine: Either the leaf or a good photograph required

Recorded in 39 (28%) of 140 10k Squares. First Recorded in 1887. Last Recorded in 2023. (Data up to end 2024) Additional Stats

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