The gall's range is computed from the range of all hosts that the gall occurs on. In some cases we have evidence that the gall does not occur across the full range of the hosts and we will remove these places from the range. For undescribed species we will show the expected range based on hosts plus where the galls have been observed.
Our ID Notes may contain important tips necessary for distinguishing this gall
from similar galls and/or important information about the taxonomic status of
this gall inducer.
Created Feb 4, 2026 1:47 PM UTC
•
Last updated Feb 4, 2026 1:47 PM UTC
A study of the hackberry gallmaker genus Pachypsylla (Homoptera: Psyllidae)
John Riemann
(1961)
Pachypsylla rugosa n. sp. (rough blister gallmaker)
Hosts: Celtis reticulata, laevigata
Gall: One to several cells occurring together; distinctly elevated above and below; veins over gall enlarged and prominent particularly above over the central part of the cell, below a small central nipple which is often obscured by the enlarged veins.
The galls of this species is easily distinguished from those of the other blister gallmakers by their greater elevation and very prominent venation. Sometimes, however, these galls are closely associated with the galls of another species, such as P. celtidisasterisca, so that they may not be readily apparent. Unless caution is used in rearing adults from such galls the species may become mixed.
Hosts and distribution: This species appears to be mostly restricted to C. reticulata although large numbers were found on what appeared to be C. laevigata near Seymour, Texas. It was found in many areas of western Texas in the range of its host but it has not yet been found in the Austin area.