As editors for their fast and accurate reviews of earlier drafts of the project, we sincerely thank the contributing of the manuscript. [...] L. The manual was initially developed for a course Dumouchel and H. E. Bisdee performed the exacting on identification of Hymenoptera given on three and time-consuming task of arranging the numerous occasions to a total of 45 students from across illustrations for each key couplet and preparing and Canada and several foreign countries. [...] The thousands of prints required for 8,42,56,65, 136, 151, 190, respectively, published publication were done by B. Wollenschlager under in 1976 by the Regents of the University of the direction of B. Edwards and R. St. [...] The sketches include a taxonomic among the most important agents for biological diagnosis to supplement the keys, a summary of the control and are extremely abundant in most biology, the size and distribution, and important terrestrial habitats. [...] One chapter on structure, including an illustrated glossary of terms, and another on the use of the keys are included to help the first-time user of identification keys to Hymenoptera.