Carrot Weevil

Carrot weevil adults spend the winter in a quiescent state, hiding in the top five centimeters of soil and in weed, grass and debris left in the field, or in field borders. In spring, the female lays her eggs in a cavity that she digs at the base of the petiole of the carrot leaf. The larva passes through four larval stages that will form tunnels through the carrot to feed. The last larval stage leaves the host plant to form the pupa in the soil, from which an adult will emerge a few days later. The carrot weevil performs between one and three generations per year depending on the latitude. However, under unfavorable conditions, this species will undergo a reproductive diapause that delays egg-laying behavior until the following spring.