Hormaphis Explained

Hormaphis is a genus of witch hazel and palm aphids in the family Aphididae. There are at least three described species in Hormaphis, found mainly in eastern North America.

Species

These three species belong to the genus Hormaphis:

• Hormaphis betulae (Mordvilko, 1901)
• Hormaphis cornu (Shimer, 1867)
• Hormaphis hamamelidis (Fitch, 1851) (witch hazel cone gall aphid)

Further reading

• Adventive aphids (Hemiptera: Aphididae) of America north of Mexico. 2006. Foottit . R. G.. Halbert . S. E.. Miller . G. L.. Maw . E.. Russell . L. M.. 4. Proceedings of the Entomological Society of Washington. 108. 3. 583–610. 0013-8797.
• An Update to the Adventive Aphids (Hemiptera: Aphidoidea) of America North of Mexico, with Notes on Intercepted Species. 2017. Skvarla . Michael J.. Halbert . Susan E.. Foottit . Robert G.. Jensen . Andrew S.. Maw . Eric. Miller . Gary L.. 4. Proceedings of the Entomological Society of Washington. 119. 1. 90–111. 10.4289/0013-8797.119.1.90.