Resident. Widespread and locally common, found
throughout the British Isles except the far north of Scotland.
Montgomeryshire Status
Generally distributed throughout the county.
Wingspan
:
M & F, 22-25mm.
Confusion species
D. ultimella.
Flight time & Voltinity
(Univoltine)
Habitat
Wherever the foodplant is found.
Foodplant
Water-dropwort spp.
Lifestage data
Stem miner. Eggs oviposition site undescribed. Larva initially mines
internally in the flowering stems and umbels, in the final instar it
feeds externally . Pupates in a loose silken cocoon in a stem.