Filicicapsus smaragdus gen. et sp. nov. (Orthotylinae) is described from the Biak Island, Papua Province of Indonesia. The position of the new taxon has been tested using Bayesian and IQ-TREE analyses based on the sequences of four fragments of mitochondrial (COI, 16S) and nuclear (18S, 28S) DNA. The taxonomic position of the new genus within the Zanchius genus group is discussed. Also provided are a diagnosis, photographs of habitus and selected structures, illustrations of male and female genitalia, scanning electron micrographs of diagnostic characters, and host information.