A cockscomb-type of a gall on Rhus toxicodendron listed as producing Eriophyidae, produced Cecidomyidae. This shows that either a new gall was produced on the plant or that the original citation was an error.

[note: "Rhus toxicodendron" is currently a synonym of a southern plant, Toxicodendron pubescens. However, Maze made this collection in Pennsylvania, north of the native range of this species. It is possible that this name was meant to refer to some other Toxicodendron sp.]

Blisters were reported as variable in size and attributed to a cecidomyiid (Maze 1949). Host: R. toxicodendron. Distr.: Pennsylvania

[note: It is not clear what "R. toxicodendron" refers to here. It is not an accepted name in the plant taxonomy source cited by Gagné elsewhere in his book (National List of Scientific Plant Names, USDA-SCS, 1982). Current taxonomic authorities (e.g. Weakley (2023), POWO) list it as a synonym for Toxicodendron pubescens, but that is a southern plant not known to occur spontaneously in Pennsylvania.]