Woody-host-specialist
Guides
Calaphis betulaecolens
Common American Birch Aphid
Calaphis betulaecolens, known as the Common American Birch Aphid, is an aphid species in the family Aphididae. It is associated with birch trees (Betula species), as indicated by its specific epithet. The species was first described by Fitch in 1851 and is native to North America. It belongs to the subfamily Calaphidinae, a group specialized on woody hosts in the birch family.