Brief Summary
provided by Catalog of Hymenoptera in America North of Mexico
The Hymenoptera is one of the largest orders of insects with more than 20,000 species in America north of Mexico, most of which are beneficial and many of which are of considerable economic importance to agriculture and forestry either as parasites or predators of pests or as pollinators of more than 100 commercially grown crops. Among the relatively few injurious Hymenoptera are the sawflies, some of which are serious defoliators or stem-borers of trees or crops.
- bibliographic citation
- Catalog of Hymenoptera in America North of Mexico. 1979. Prepared cooperatively by specialists on the various groups of Hymenoptera under the direction of Karl V. Krombein and Paul D. Hurd, Jr., Smithsonian Institution, and David R. Smith and B. D. Burks, Systematic Entomology Laboratory, Insect Identification and Beneficial Insect Introduction Institute. Science and Education Administration, United States Department of Agriculture.
