The New World species of the genus Peritropis are revised, and 17 new species are described: P. amazonica, P. amphicyrta, P. carpinteroi, P. carvalhoi, P. conspersa, P. cornata, P. gorczycai, P. guarani, P. izyai, P. marmorea, P. nicaraguensis. P. plaumanni, P. schaffneri, P. scutellata, P. stobieckii, P. turrialba and P. venezuelaensis. All previously known species from the New World (P. husseyi Knight, P. saldaeformis Uhler, and P. tuberculata McAtee and Malloch) are redescribed, except P. unicolor Carvalho and Rosas for which an English translation of the original description is provided. Illustrations of the male genitalia, a color photograph of the adult of each species, scanning electron micrographs of selected structures of Peritropis husseyi, P. saldaeformis and P. turrialba, and a key to species are provided.

The genus Isometocoris Carvalho and Sailer is reviewed and I. penicillus, new species, from Brazil is described. Diagnoses of the genus and included species I. blantoni Carvalho and Sailer and I. penicillus, n. sp., are given; a color adult habitus photo of both Isometocoris species, male genitalic drawings of Isometocoris penicillus n. sp., and scanning electron micrographs of selected structures of I. blantoni are provided; and an identification key is given to help distinguish the two included species. Isometocoris is transferred from the subfamily Psallopinae to the Cylapinae, where it is placed in the tribe Fulviini. Psallopinae is reduced to tribal level (Psallopini, new status) within the Cylapinae, and relationships among Cylapinae, Isometopinae, and Psallopinae are discussed.

Mycetocylapus Poppius, Proamblia Bergroth, Rhinocylapidius Poppius, and Rhinocylapus Poppius are revised. Three new species of Rhinocylapus: Rh. kmentii, Rh. pallescens, and Rh. redeii spp. nov. are described from the Malaysia, Philippines, and Indonesian Borneo, respectively. Rhinocylapidius velocipedoides Poppius is restored to its original genus. The lectotype for Proamblia cunealis (Poppius) is designated. Dorsal habitus color photographs of all species, scanning electron micrographs of the species of each genus, and pictures of male genitalia are provided. Keys to all the taxa are presented.

Eight new species of the tribe Bothriomirini are described from the Oriental Region, namely Dashymenia cognata sp. nov., Dashymenia colubrina sp. nov., Dashymenia conspersa sp. nov., Dashymenia tenmalai sp. nov., Dashymenia webbi sp. nov., Dashymeniella spatulatiformis sp. nov., Dashymeniella ulu sp. nov., and Dashymeniella viklundi sp. nov. Five species are redescribed: Bothriomiris dissimulans (Walker), B. lugubris Poppius, B. testaceus Distant, Dashymenia croesus (Distant), and Dashymenia remus (Distant). Illustrations of the male genitalia, a color dorsal habitus photograph of the adult of most species, scanning electron micrographs of selected structures of Bothriomiris dissimulans, Dashymenia tenmalai, Dashymeniella spatulatiformis, and Dashymeniella ulu are given. An identification key to the Oriental genera and keys to species of the genera Bothriomiris, Dashymenia, and Dashymeniella are provided.

The genera Peritropisca Carvalho & Lorenzato, 1978 and Rewafulvius Carvalho, 1972 are redescribed. A description of a new species of the genus Peritropisca from Indonesia—P. laticostata sp. nov. and a redescription of P. bituberculata Carvalho & Lorenzato, 1978 are provided. The genus Euchilofulviella Gorczyca, 1999 is proposed as a junior synonym of Rewafulvius Carvalho, 1972 syn. nov. A color habitus picture of the adult and male genitalia drawings of each treated species are provided. A key to the genus Peritropisca is given.

Revision of the plant bug genus Cylapocoris Carvalho (Hemiptera: Heteroptera: Miridae: Cylapinae), with descriptions of seven new species from Costa Rica, Brazil, Ecuador, and Venezuela