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Willow - umbellifer aphidOn this page: Identification & Distribution Other aphids on the same host
Identification & Distribution:
Adult apterae of Cavariella pastinacae are rather light shiny green with appendages pale except for the base of antennal segment VI and the tarsi which are dark. Their antennae are about 0.45 times the length of the body and the terminal process is 3.0-4.0 times the base of the last antennal segment. The siphunculi are 2.3-3.0 times as long as the cauda and are slightly swollen towards the tip. The supracaudal process is broadly tongue-shaped,with a flat apex and is 0.5-0.8 times the length of the cauda. The body length of apterae is 1.8-2.9 mm. The Cavariella pastinacae alate has a dark abdominal patch formed by more or less fused cross bands on tergites III-VI. The antennae, cauda, supracaudal process and distal halves of siphunculi are dark.
The clarified slide mounts below are of adult viviparous female Cavariella pastinacae : wingless, and winged.
The willow - umbellifer aphid host alternates between willows (Salix spp.) and some umbellifers mainly hogweed (Heracleum), wild parsnip (Pastinaca) and Angelica. Cavariella pastinacae is common over most of Europe and in North America.
Other aphids on same host:
For lists of of aphid species on willows (Salix) see our aphids on willow page.