Notes on the Water Beetles of Southampton Island in the Canadian Arctic (Coleoptera: Dytiscidae and Haliplidae)

Abstract

Water beetles from the Canadian Arctic available in museums often lack any specific ecological data. In consequence, I was pleased to receive for study the specimens collected by Dr. D. G. Frey and Mr. J. B. Stahl on Southampton Island (Northwest Territories) while they participated in an expedition sponsored by the Indiana Gear Works of Indianapolis, Mr. John Buehler, President. The beetles were collected during the period August 10 to 26, 1957, in connection with limnological studies and are accompanied bv detailed notes on the habitats and associated organisms. I am especially indebted to Dr. Frey for allowing me to use and paraphrase his personal notes on the expedition. Mr. H. B. Leech of the California Academy of Sciences has kindly checked the determinations.