The larvae are white with a brown head. Adult moths have a black body with two or three bright yellow markings on their thorax and abdomen. Its wings are transparent.
The crown moth of the strawberry spends the winter as larvae in the crown of the plants. In the spring, the larvae emerge and feed for a few more weeks before the pupa in late spring. The adults emerge approximately 3 weeks later, mate and then lay eggs on the leaves or on the crown. The eggs hatch 2 weeks later and the young larvae feed on the roots and crown until they hibernate and the cycle begins again.
The larvae feed on the crown and the root tissue of the plants. The plants wither and atrophy. The foliage turns red. In strawberries, the plants separate from the root in the line of the crown when it is pulled.
Remove damaged plants or prune infestations. Clean any residue under the plants. Insecticides are usually not effective.