Cavariella aegopodii

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Cavariella aegopodii female vivipara (click on image to enlarge it)
Author(s): Brendan Wray
Source: IPM Images

Cavariella aegopodii (Scopoli, 1763) - (willow-carrot aphid)

This aphid is widely distributed and is regarded mainly as a pest and virus vector on carrots. During the summer, carrots, celery and other Apiaceae are infested, the secondary hosts. Here, the aphid propagates asexually through wingless females. In Autumn, winged males and females develop which migrate to willows, the primary host. Females lay eggs on willows which overwinter. During spring, several generations are produced on willows before the aphid migrates back to carrots.

The wingless females are green and about 2 mm long. The antennae are around one third as long as the body. The siphunculi become wider in their distal half and appear swollen.

Vernacular names
• Deutsch: Gierschblattlaus
• English: willow-carrot aphid
carrot-willow aphid
• Français: puceron de la carotte
• Português: pulgão-da-cenoura