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Descriptions are given of the new species Anacis ignifera and A. flammigera from Mérida State, Venezuela and of A. umbrifera from Machu Picchu, Perú. These belong to a tropical Andean lineage with strongly projecting propodeal cristae and pictured wings. Anacis hercana Porter, a Chilean species long known only from the holotype taken at El Canelo near Santiago, now is documented by a second specimen from nearby Río Clarillo. Biconus Townes (1969) is synonymized under Anacis Porter (1967a). Anacis apoeca (Porter), A. atrorubra (Townes), and A. subflava (Porter) are new combinations in Anacis. The South American species of Anacis are keyed.
Rhyssa neotropicae n. sp. is the first Rhyssa to be recorded from the New World tropics, where it was collected in cloud forest at 1800 m on Monte Uyuca near Zamorano, Honduras. It is closely related to the Nearctic R. hoferi Rohwer and R. howdenorum Townes but differs from all other Rhyssa by its complexly yellow and black marked head and body, whose color pattern mimics that of aggressive social vespid wasps (Agelaia) which occur in the same habitat. Rhyssa howdenorum Townes is recorded for the first time from Florida and Oklahoma. The genus Rhyssella, previously unknown in Florida, is represented in that state by R. perfulua n. sp., distinctive in its mostly orange brown coloration, and by R. humida (Say), a black and white species with fulvous on the thoracic pleura and propodeum.
Labena is a primitive genus known from the Neotropic, Nearctic, Neantarctic, and Australian biogeographic regions. It parasitizes larvae of wood boring beetles in dead twigs and smaller branches of hardwood trees and shrubs. Descriptions are given of 2 new Chilean species: Labena canelensis Porter, from sclerophyll woodland in central Chile, is black with sparse white markings, has a strong tooth at the base of the submetapleural carina, and a short first gastric tergite (2.3-2.6 as long as wide at apex), whereas L. pucon Porter occurs in temperate wet forest of southern Chile and is black with profuse white markings, lacks a submetapleural tooth, and has the first tergite very elongate (4.0-6.2 as long as wide at apex).
Xorides albopictus (Cresson) and Xorides calidus (Provancher) are recorded for the first time from Florida. New Florida records are given for Xorides semirufus Townes, previously known only from the holotype female collected near Archer in Alachua County in 1953. A key is provided to the Florida species of Xorides. A photograph of X. semirufus is included.