Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Information, insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa


Species Acyrthosiphon pisum - Pea Aphid

Aphid - Acyrthosiphon pisum Aphid - Acyrthosiphon pisum Adult non-alate pea aphids - Acyrthosiphon pisum Wingless female Pea aphid? - Acyrthosiphon pisum - female Aphid? - Acyrthosiphon pisum Odd Aphid - Acyrthosiphon pisum Aphidinae? - Acyrthosiphon pisum Green Aphid - Acyrthosiphon pisum
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
Suborder Sternorrhyncha (Plant-parasitic Hemipterans)
Superfamily Aphidoidea
Family Aphididae (Aphids)
Subfamily Aphidinae
Tribe Macrosiphini
Genus Acyrthosiphon
Species pisum (Pea Aphid)
The most common pest aphid on legumes like alfalfa in northwestern N. America. It causes hundreds of millions of dollars of crop damage a year.
Non-native, first reported in 1877, from the Palearctic region.
Print References
Foottit, R. G. et al.: Adventive Aphids (Hemiptera: Aphididae) of America North of Mexico. Proc. Entomol. Soc. Wash. 108 (3), 2006, pp 583-610.