For this address I will discuss 'the miners of Yorkshire'; if you are expecting to hear about men with dirty faces and pit ponies then you are going to be disappointed as I am dealing with mining flies in the family Agromyzidae. Some may be aware of this family of flies but for those who do not, here's a bit of background information:over 3,200 species worldwide,424 species currently on the British listsmall flies, wing length between 0.5mm-6mm in length, most are between 1.5 and 3.5mmlarvae of all Agromyzids feed inside the living tissue of plantslarval feeding habits are quite diversemany species can be named by just the appearance of the larval mine and the host plant but most need to have the male genitalia examined to confirm the species.
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