Pachypsylla is a genus of North American psyllids.

[1] Species of the genus Pachypsylla lay eggs on the leaves of the Celtis occidentalis tree.

Upon hatching, the young psyllids become encased in a gall which the young leaf parts grow in response to the infestation.

[2] The following species are recognised in the genus Pachypsylla:

This Hemiptera article related to members of the insect suborder Sternorrhyncha is a stub.