The bryocorine genus Caulotops Bergroth (Miridae: Eccritotarsini), originally described to accommodate its only species C. puncticollis Bergroth, is shown not to be congeneric with all other species now included in the genus from North, Central, and northern South America. Consequently, four new genera are established for the following 20 species, including five new combinations and 14 species described as new: Agaveocoris n. gen. for Caulotops agavis Reuter (as the type species), n. comb.; C. barberi Knight, n. comb.; and C. distanti Reuter, n. comb. and the new species A. bimaculatus, n. sp.; A. barrerai, n. sp.; A. dimidiatus, n. sp.; A. marginalis, n. sp.; A. roseus, n. sp.; A. rostratus, n. sp.; A. schaffneri, n. sp.; and A. scutellatus, n. sp; Laterospinocoris, n. gen. for Caulotops cyaneipennis Reuter, new comb. (as the type species) and the new species L. mexicanus, n. sp.; Nigrotomocoris n. gen. for Caulotops nigrus Carvalho (as the type species), n. comb.; C. tibiopallidus Carvalho, n. comb.; and the new species N. keltoni, n. sp. and N. longirostris, n. sp.; and Schaffnerocoris, n. gen., for S. fuscotibialis, n. sp. (as the type species), S. pallipes, n. sp., and S. similis, n. sp. Lectotypes are designated for Caulotops agavis Reuter, Caulotops cyaneipennis Reuter, and Caulotops puncticollis Bergroth, and a neotype is designated for Eccritotarsus platensis Berg. Each genus and species is diagnosed and described; habitus images, illustration of male genitalia and selected female genitalia, and keys to genera and species are provided; and host use and the unique genitalic systems of these taxa are discussed. A phylogenetic analysis, based on 22 taxa and 39 characters, resulted in three trees supporting the monophyly of the four new genera proposed in this study.
Keywords: Hemiptera, Insecta, true bugs, taxonomy, new taxa, new combinations, relationships, distributions, hosts, identification keys.