Abstract

A key to Trisetacus includes T. grossmanni, which damages Sitka spruce in Germany, and the three previously known species. Aceria fagerinia, from Pennsylvania, yellow erineum on beech. JOHNELLA includes J. virginiana from Virginia and J. chrysolepis from California, both found on oaks. New species from Maryland are: Cecidophyes lyrata, a leaf vagrant on Quercus lyrata; Aculus copallina, on Rhus copallina; Phyllocoptes sassafrasella, on sassafras; Epitrimerus virginiana, on Prunus virginiana; and Diptacus fragarifoliae, on wild strawberry; from Virginia, Rhyncaphytoptus rubrifoliae and Diptacus rubra, both on Quercus rubra; and from California, Epitrimerus demissae, on Prunus demissa. A key is given to separate Cecidophyes and four related genera. ANOTHOPODA, type A. johnstoni, from Australia, redefines the subfamily Nothopodinae.