The New World species of Iconella (Hymenoptera: Braconidae, Microgastrinae) are revised. Iconella andydeansi Fernández-Triana, sp. n., Iconella canadensis Fernández-Triana, sp. n., and Iconella jayjayrodriguezae Fernández-Triana, sp. n., are described as new. Iconella isolata (Muesebeck, 1955), stat. r., previously considered as a subspecies of Iconella etiellae (Viereck, 1911), is here elevated to species rank. All species have different, well defined geographic distributions and hosts. Taxonomic keys are presented in two formats: traditional dichotomous hardcopy versions and links to electronic interactive versions (software Lucid 3.5). Numerous illustrations, computer-generated descriptions, distributional information, host records (mostly Lepidoptera: Crambidae and Pyralidae), and DNA barcodes (where available) are presented for every species. Phylogenetic analyses of the barcoding region of COI indicate the possibility that Iconella is not monophyletic and that the New World species may not form a monophyletic group; more data is needed to resolve this issue.
Keywords: Area de Conservacion Guanacaste; DNA barcoding; Iconella; Microgastrinae; New World; host caterpillars; parasitoid wasps; taxonomic review.