The larvae of the fly Phytomyza artemisivora mine the leaves of Mugwort and other plants in the genus Artemisia, and also Chrysanthemum species. They form mines with a long corridor, often partly following the leaf veins or margin. The frass consists of separate grains resembling a string of pearls. This species forms a black puparium, distinguishing it from Liriomyza spp.. which form similar mines but have an orangey-yellow puparium.

Liriomyza artemisicola / Liriomyza demeijerei / Liriomyza ptarmicae / Liriomyza tanaceti / Liriomyza yasumatsui

ref.: Warrington, B.P. (2023).  Phytomyza artemisivora. Accessed at https://agromyzidae.co.uk/species/agromyzidae/phytomyzinae/phytomyza/ph… on 13/12/2023)

Leafmine  Adult

Please provide back-lit image of leafmine and state host plant. It may only be possible to record this species if the puparium is present and is examined.

Anywhere the host plants occur.

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.

Leafmines may be found from June to November.

In Britain this species is classed as Nationally Scarce B.

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

Status in Leicestershire and Rutland not known.