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Species Aphis glycines - Soybean Aphid

Soybean aphid on buckthorn - Aphis glycines - female Early-season infestation of soybean aphid (SBA) - Aphis glycines Close-up of an early-season colony of soybean aphid (SBA) - Aphis glycines Soybean aphid infestation on R1-stage soybean - Aphis glycines Soybean aphid infestation on R1-stage soybean - Aphis glycines Ant tending of soybean aphid - Aphis glycines Soybean aphid on buckthorn, spring - Aphis glycines Soybean aphid on buckthorn, spring - Aphis glycines
Classification
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 Aphidini
Subtribe Aphidina
Genus Aphis
No Taxon (Subgenus Aphis)
Species glycines (Soybean Aphid)
Explanation of Names
Author: Matsumura, 1917
Size
Less than 2 mm.
Identification
Greenish-yellow, with reddish-brown eyes. Plump oval-like body with two black cornicles at the top rear of its abdomen. The winged forms have two pairs of transparent delicate wings. The nymphs are wingless and look identical to adult females but only smaller in size. (Penn State fact sheet)
Range
Native to E. Asia. Recently (1990s) introduced to NA and widespread in e. US, esp. Midwest(1) (found in PA in 2001)
Food
Soybean is their secondary host. They overwinter on their primary host, buckthorn (Rhamnus spp.)
Remarks
Major pest of soybean. Fields close to buckthorn plants (the overwintering plant) tend to suffer worse infestations.
Some natural enemies are ladybeetles, lacewings, pirate bugs, predatory flies, and entomopathogenic (insect disease-causing) fungi
Works Cited
1.Adventive aphids (Hemiptera: Aphididae) of America north of Mexico
Foottit R.G., Halbert S.E., Miller G.L., Maw E., Russell L.M. 2006. Proc. Ent. Soc. Wash. 108: 583-610.