Poneromorph ants associated with parasitoid wasps of the genus Kapala Cameron (Hymenoptera: Eucharitidae) in French Guiana

Abstract

Eucharitid wasps are specific, specialized parasitoids of ants. The genus Kapala Cameron is the most common in the Neotropics but few species are described, and information dealing with their biology, behavior and host associations is scarce. Numerous poneromorph ant colonies were inspected over 4 collection surveys in French Guiana. A diverse fauna of parasites and parasitoids was found, including mermithid nematodes, flies, eucharitids, and another gregarious endoparasitoid wasp. Five new host associations for Kapala are reported, all of them involving medium- to large-size poneromorph ant species from 4 genera: Ectatomma brunneum Fr. Smith, Gnamptogenys tortuolosa (Fr. Smith), Odontomachus haematodus (L.), O. mayi Mann, and Pachycondyla verenae (Forel). Three other associations involving O. hastatus (Fabr.), P. apicalis (Latreille), and P. stigma (Fabr.), already reported for other countries but new for French Guiana, are confirmed. The data extend the number of hosts for Kapala to 24 ant species from 7 genera. The high diversity of the ant host genera associated with Kapala, combined with the fact that these ant genera are the most widely distributed among Neotropical poneromorph ants, could account for the dominant status of the genus Kapala among the eucharitine wasps of Central and South America. © 2012 Jean-Paul Lachaud et al.