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An introduced species of moth to help control ragwort. I found hundreds in an overgrown field. The larvae of the species do a great job of eating ragwort. Once the food supplies begin to dwindle the caterpillars often turn cannibalistic.
Spotted devouring tansy ragwort plants in an overgrown farm meadow.
The main reason for its introduction is to control tansy ragwort, which is toxic to livestock.
Spotted on Jul 1, 2021
Submitted on Jul 3, 2021