Insects of economic importance in California–whether native or introduced–have often been studied with almost complete disregard for their relationship to other insect species, largely because of the immediacy of a specific problem.

The above progress report is based on Research Project No. 1205.

The Bulletin of the California Insect Survey, containing detailed information on the distribution and ecology of insects in California, is available by addressing a request to the Department of Entomology, University of California.