Identification guide for cosmopolitan and polyphagous aphid species

Aphids are one of the most important agricultural insect pests. They cause direct feeding damage to the plant and serve as vectors of plant viruses. The establishment of these aphid species would present dire consequences to US agriculture, as happened with the soybean aphid. To make informed decisions about the importation of agricultural products, it is critical that intercepted aphids be accurately identified. AphID is intended to help US port identifiers, quarantine officers, and anyone seeking a preliminary but relatively simple way to identify aphids.