Pachypsylla celtidisvesicula, commonly called the hackberry blistergall psyllid, is a species of aphalarid psyllid found in North America.

The nymphs of this species induce blister-like galls on the leaves of various hackberries (Celtis spp.)

throughout its range.

[1] It closely related to the more common hackberry nipplegall psyllid (Pachypsylla celtidismamma), which it strongly resembles as an adult.

[1]