Phytomyza horticola is a species of leaf-mining fly in the family Agromyzidae of the order Diptera.

[10] The species is a pest of high economic importance affecting the vegetable crops in temperate and tropical regions.

[11][12] Phytomyza horticola is recorded in around 268 genera of 36 families, commonly Brassicaceae, Fabaceae and Asteraceae.

The polyphagous pest is distributed in various regions of Africa, Asia, and Europe.

[13] This article related to members of the muscomorph flies superfamily Opomyzoidea is a stub.