Rape stem weevil
Ashy grey, 3 to 4 mm long. Black leaded elytra ornated with fine stripes separated by large intervals, covered in short greyish hairs. Larva apodous, develops in 3 larval instars. It measures 6 to 8 mm in length at the end of its development. The head, blackish in the first two instars, becomes yellow in the third. The body, white during the first instar, slightly tainted during the second, is yellow during the third.