Last modified: March 29, 2021, 8:05 a.m.
A very rare species in Belgium.
The larva lives from summer onwards in the rootstock of Ajuga reptans. After hibernation, it bores into a flowering stem. This often causes wilting of the top or retarded growth. Some parts of the stem or rootstock are filled with brown frass. Plants growing in the shade seem to be preferred and even there density seems low. The larva prepares an exit hole. Pupation in the larval habitat within a flimsy, white cocoon. The pupa protrudes the exit hole before emerging.
Feeding signs can be confused with those of Cnephasia spp. as they may also cause wilted tops on this host plant. Larvae of those species however live on the outside of the stem between the flowers.
Ajuga reptans, also garden cultivars.
Damp areas and forests where the host plant occurs. Also gardens.