| Egg parasitoids (Hymenoptera: Eulophidae, Mymaridae, and Platygastridae) of Megamelus spp. (Hemiptera: Delphacidae) in Argentina are reviewed and keyed. Four new species are described: Anagrus (Anagrus) empanadus Triapitsyn, sp. nov. (Mymaridae, parasitoid of M. scutellaris Berg feeding on water hyacinth, Eichhornia crassipes (Martius) Solms-Laubach, Aprostocetus (Ootetrastichus) riverplaticus Triapitsyn, sp. nov. (Eulophidae: Tetrastichinae, parasitoid of M. bellicus Marino de Remes Lenicov & Sosa), A. (Ootetrastichus) yerbamatei Triapitsyn, sp. nov. (parasitoid of M. bellicus, M. scutellaris and Megamelus sp.), all from Buenos Aires Province (A. (Ootetrastichus) yerbamatei also occurs in Formosa Province), and Parascelio sabcli Triapitsyn, sp.... |
