|
|
Galls of aphids |
|
|
|
Galls of aphids |
|
|
|
|
Adelgids |
|||
|
|
|
|
|
|
Adelges laricis |
Sacchiphantes viridis |
Sacchiphantes viridis |
Gilletteella ccoleyi |
|
|
|
|
|
|
Pemphigids |
|||
|
on elm: |
|
|
|
|
Eriosoma lanuginosa |
Eriosoma ulmi |
Tetraneura ulmi |
|
|
on poplar: |
|
|
|
|
Pemphigus spirotecae |
|
|
|
