title: Contributions to the classification of North American Microctonus  (Braconidae, Euphorinae).
abstract: The 31 species of Microctonus Wesmael that occur in North America are taxonomically treated. Six are described as new: M. cappilicrus, M. gouleti, M. passi, M. portalensis, M. rotundatus, and M. sharkeyi. Microctonus zimmermanni Loan is considered a junior synonym of M. brevipetiolatus (Thomson) and M. barri Loan is considered a junior synonym of M. muesebecki Loan. The European Perilitus alticae Haeselbarth is given the new name M. haeselbarthi. Microctonus nigri-tus (Provancher) is considered a nomen dubium. A key to the species, a list of hosts, and images are provided.
authors.affiliation: Department of Invertebrate Zoology, Cleveland Museum of Natural History 1 Wade Oval DriveCleveland, Ohio 44106, USA.  tmpucci@yahoo.com
authors.forename: Thomas M
authors.initials: TM
authors.lastname: Pucci
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D005260:Female; D058507:Host Specificity; D008297:Male; D009656:North America; D009929:Organ Size; D014863:Wasps / Q000033:anatomy & histology / Q000145:classification* / Q000254:growth & development / Q000502:physiology