Leaf miners of chrysanthemum

Leaf miners are often found on chrysanthemums and related plants. Normally, these leaf miners are native insects, belonging to the species known as the chrysanthemum leaf miner (Phytomyza syngenesiae (Hardy)), which is a common pest widely distributed throughout the British Isles. However, alien leaf miners are sometimes introduced with imported cuttings and these species are described on pages 271–273.