Aphids

Typical Aphid Structures

parts of an aphid

Aphid economic threshold:

Seed fields:

  • 1 winged Green peach aphid

or

  • 10% of the plants with aphids

Processing and Tablestock:

  • 1 winged Green peach aphid

or

  • 10% of the plants with aphids
Aphids
Variety Description
Winged Potato Aphid
winged potato aphid
The potato aphid is the largest of the potato infesting aphids. This aphid has several color forms, ranging from yellow-green to light green to dark green to pink. The body is elongate, somewhat wedge-shaped. The antennae are about the same length as the body.
Wingless Potato Aphid
wingless potato aphid
The antennal tubercles are prominent and outward sloping. The cauda extends about the same distance as the cornicles.
Winged Foxglove Aphid
winged foxglove aphid
The Foxglove aphid will usually have a series of dark bands on the abdomen. The antennae will be slightly longer than the body. The leg joints will be dark colored. This aphid will also have somewhat of a “spidery” appearance.
Wingless Foxglove Aphid
Wingless Foxglove Aphid
Winged Green Peach Aphid
Winged Green Peach Aphid
The key characteristic for winged Green peach aphid identification in the field is the prominent card colored mask on the abdomen.
Wingless Green Peach Aphid
Winged Green Peach Aphid
 The body of this aphid is egg/tear dropped shaped. The cornicles seem to bend towards the cauda. Antennal tubercles are prominent and inward pointing. The color and shape many times resembles a sesame seed. They can be light green to almost translucent, sometimes deep pink.
Wingless Buckthorn Aphid
Wingless Buckthorn Aphid
 This aphid is the smallest of the potato infesting aphids. The antennae are much shorter that the body. The front of the head is flat and there are no prominent antennal tubercles.
 Winged Buckthorn Aphid
Wingled Buckthorn Aphid
This is a rather small aphid, with inconspicuous antennal tubercles. The antennae tend to be about half the length of the body. The area between the antennae is smooth. The cornicles tend to be rather short as compared to the body and are slightly shorter in length than the cauda.
 Melon Aphid
Melon Aphid
Melon Aphid
A species of aphid that occasionally infests potatoes. This aphid can be difficult to identify because it can vary greatly in appearance. This aphid is closely related to the Buckthorn aphid.