The larva of the fly Amauromyza verbasci causes a blotch mine on the upper surfaces of the leaves of Mullein, Common Figwort and Butterfly Bush. The mine is pale initially but turns brown later. Frass in sizeable dispersed grains.

See the National Agromyzidae Recording Scheme website for further details of puparium and adult insect.

ref:Warrington,B.P.(2023) Amauromyza verbasci.Accessed at https://agromyzidae.co.uk/species/agromyzidae/phytomyzinae/amauromyza-2/cephalomyza/cephalomyza-verbasci/ on 11/12/23

Leafmine Adult

Please provide a back-lit image of the leafmine in the leaf and state the host plant.

Leaf mines may be recorded wherever the host plants are found.

Click on the 'further details' link in the 'Description' section above.  Then click on the Phenology tab which will provide phenology details for both adult and larval stages.

The leafmines may be found between May and November.

Local

Warrington, B. P. 2022. A provisional review of the status of Agromyzidae in Great Britain & Northern Ireland

Fairly frequent in Leicestershire and Rutland.