species 943 observations
Plum-thistle Aphid
Brachycaudus cardui
Field notes
Brachycaudus cardui is a species of aphid, commonly known as the thistle aphid or the plum-thistle aphid. It infests trees in the genus Prunus in the spring and autumn, and mostly plants in the aster family in the summer.
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169
native plants
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Range
Greener is more native, amber more introduced; paler is less certain. How this was decided