Colopha compressa
Aphid Colopha compressa
Description
About 1–2 cm tall vesicle-like gall occurs on the top side of the leaf, always on the broader side of the blade. The gall is pale green; on the borders it can be red. It occurs mostly singly. Inside are found aphids at various developmental stages.
Symptom
A bladder-like growth about 1 - 2 cm high.
Tree Species: Elm
Part of a plant- attacked: Leaf / Needle
Pest significance: Less harmful
Pest Category: Insects
Invasive Species: No
Present in EU: Yes
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There are a total of 4 observations of the species in the system



