Canola-pests
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Phyllotreta
flea beetles
Phyllotreta is a cosmopolitan genus of flea beetles (Chrysomelidae: Alticini) comprising at least 300 described species worldwide. Species are almost exclusively associated with host plants in Brassicaceae and related families in the order Brassicales, with 18% of species feeding on multiple families within this order. Many species are economically significant agricultural pests, particularly of crucifer crops including canola, cabbage, and turnip. The genus has independently colonised Brassicaceae and exhibits adaptations to the characteristic chemical defences (glucosinolates) of these host plants.