Taxa named by Hartford H Keifer

Aceria is a genus of mites belonging to the family Eriophyidae, the gall mites. These tiny animals are parasites of plants. Several species can cause blistering and galls, including erineum galls. A few are economically significant pests, while others are useful as agents of biological pest control of invasive plants such as rush skeletonweed (Chondrilla juncea), creeping thistle (Cirsium arvense), and field bindweed (Convolvulus arvensis). There are over 900 species in the genus.

Aculus is a genus of mites, including the following species:

Acalitus is a genus of mites in the family Eriophyidae. These cosmopolitan, microscopic arthropods form galls on various plants, and some species such as Acalitus essigi and Acalitus vaccinii are pests of agricultural significance associated with berry crops. This genus includes, but is not limited to the following species:

species of arachnid

thumb | right | alt=Top view of agyrotaenia ijungiana | Top view of agyrotaenia ijungiana Argyrolacia is a genus of moth in the family Gelechiidae. It contains only one species, Argyrolacia bifida, which is found in western North America, with records from California and Arizona.