Fullers rose weevil

Asynonychus cervinus

Fuller’s rose weevil (Asynonychus cervinus) attacks a wide range of broadleaf plants and occasionally damages canola, lucerne and pastures. They are more regularly a problem in commercial and ornamental horticultural crops. Damage can occur as adults chew stems, cotyledons and leaves of emerging crops; in canola and lucerne, damage can occur as serrated leaf margins. The flightless adults generally emerge from pupation sites in the soil between February and May, but can be present throughout the year. They have 1-2 generations per year.

Adults are 8mm long, wingless with a short broad snout. They are grey-brown, darker on the sides with a distinguishing short, oblique, white line halfway along the body. They are flightless and have a habit of climbing. This species can be confused with the small lucerne weevil. Mature larvae are legless, yellow and about 6 mm long. 

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