Mirídeos neotropicais, CCXXXIX: descrições de algumas espécies de Cylapinae do Amazonas (Hemiptera).This paper deals with descriptions of a new genus and new species of plant bugs (Hemiptera, Miridae) from the Reserva Ducke in the neighborhood of Manaus, as follows: Duckecylapus n. gen., D. duckei n. sp.; Cylapocoris barensis n. sp., and the allotype of Amapacylapus amapariensis Carvalho & Pontes, 1968. Types are deposited in the Entomological Collection of the Amazonian National Institute of Research in Manaus. Illustrations of the species are included.