Alobevania Kawada & Deans, n. gen., and three new ensign wasps, A. gattiae Kawada & Deans, n. sp., A. tavaresi Kawada & Deans, n. sp., and A. longisaeta Kawada & Deans, n. sp. are described from specimens collected in the Neotropics. A key to species and discussion of how this previously undescribed lineage fits within Evaniidae are provided. This taxonomic effort is greatly enhanced by the integration of numerous Web resources: a) an ontology of Hymenoptera morphology, b) annotations and collections of images archived in Morphbank, c) descriptive species pages at Evanioidea Online, d) Web-based multi-entry and bifurcating diagnostic keys at Evanioidea Online, e) taxon pages at the Tree of Life Web Project, f) registration of taxa, authors, taxonomic references, and specimens at ZooBank and assignment of Life Science Identifiers (LSIDs), g) georeferencing of all specimen localities, with downloadable KML files, h) manuscript is marked up using TaxonX and is available through Plazi.