Two new species of Oobius Trjapitzin (Hymenoptera, Encyrtidae) egg parasitoids of Agrilus spp. (Coleoptera, Buprestidae) from the USA, including a key and taxonomic notes on other congeneric Nearctic taxa.
Oobius Trjapitzin (Hymenoptera, Encyrtidae) species are egg parasitoids that are important for the biological control of some Buprestidae and Cerambycidae (Coleoptera). Two species, Oobiusagrili Zhang & Huang and Oobiuslongoi (Siscaro), were introduced into North America for classical biocontrol and have successfully established. Two new native North American species that parasitize eggs of Agrilus spp. (Buprestidae) are described and illustrated from the USA: Oobiusminusculus Triapitsyn & Petrice, sp. n. (Michigan), an egg parasitoid of both Agrilussubcinctus Gory on ash (Fraxinus spp.) and Agrilusegenus Gory on black locust (Robiniapseudoacacia L.) trees, and Oobiuswhiteorum Triapitsyn, sp. n. (Pennsylvania), an egg parasitoid of Agrilusanxius Gory on European white birch (Betulapendula Roth). A taxonomic key and notes on the Nearctic native and introduced Oobius species are also included.
Entomology Research Museum, Department of Entomology, University of California, Riverside, California, 92521, USA.
Serguei V
SV
Triapitsyn
United States Department of Agriculture Forest Service, Northern Research Station, 3101 Technology Blvd., Suite F, Lansing, Michigan, 48910, USA.
Toby R
TR
Petrice
Systematic Entomology Laboratory c/o National Museum of Natural History, P.O. Box 37012, Washington, DC, 20013-7012, USA.
Michael W
MW
Gates
United States Department of Agriculture Forest Service, Northern Research Station, 3101 Technology Blvd., Suite F, Lansing, Michigan, 48910, USA.
Leah S
LS
Bauer
Emerald ash borer; Nearctic; Oobiusagrili; biological control; congener identification key; egg parasitoid; new species