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.
”- John Riemann: (1961) A study of the hackberry gallmaker genus Pachypsylla (Homoptera: Psyllidae)©