Published online by Cambridge University Press: 31 May 2012
Larval descriptions are useful, but if these same descriptions can be satisfactorily tied together by an artificial key, their value is greatly enhanced. Herewith a key is presented for the determination of mature geometrid larvae on which notes have been published in this periodical since 1941.
* Contribution No. 2433, Division of Entomology, Science Service, Department of Agriculture, Ottawa, Canada.