Submitted to: Proceedings of the Entomological Society of Washington
Publication Type: Peer reviewed journal
Publication Acceptance Date: 3/16/2009
Publication Date: 7/27/2009
Citation: Kula, R.R., Martinez, J.J., Cabrera, G. 2009. Supplement to revision of New World Chaenusa Haliday sensu lato (Hymenoptera: Braconidae: Alysiinae). Proceedings of the Entomological Society of Washington. 111(3):641-655. Interpretive Summary: Parasitic wasps attack agricultural and forest pests that cause billions of dollars of damage to crops and forests annually. They also attack beneficial natural enemies and are pests when they disrupt biological control. The group treated in this paper contains species that attack leaf-mining flies, including rice pests and flies used to control aquatic weeds. Increased knowledge of these wasps can help determine how they regulate fly populations on economically important plants. Two new species are described, including one that attacks flies under evaluation for control of an aquatic weed in the US new distribution records are reported for seven species. This paper will be useful to scientists, as well as State and Federal personnel, involved in aquatic weed biological control.
Technical Abstract: Chaenusa aurantium Kula and Martinez, new species and Chaenusa steineri Kula, new species, both from the Neotropical Region, are described. The former species was reared from an undescribed species of Hydrellia Robineau-Desvoidy (Diptera: Ephydridae) in Argentina under evaluation for control of Egeria densa (Planch.) (Alismatales: Hydrocharitaceae), Brazilian waterweed, in the US. Chaenusa pallidinervis (Brèthes), also from the Neotropical Region, is redescribed. New distribution records are reported for Chaenusa americana (Riegel), Chaenusa bergi (Riegel), Chaenusa quadriceps (Ashmead), Chaenusa trumani Kula, Chaenusa whartoni Kula, and Chaenusa woolleyi Kula from the Nearctic Region, as well as Chaenusa ireneae Kula from the Neotropical Region. These data supplement a recently published revision of New World Chaenusa Haliday sensu lato.