Biology of Social InsectsMichael D. Breed, Charles D. Michener, Howard Ensign Evans · First published 2019Open the Tome
The natural history of the Long Expedition to the Rocky Mountains (1819-1820)Howard Ensign Evans · First published 1997AdventureOpen the Tome
Systematics and nesting behavior of Australian Bembix sand wasps (Hymenoptera, sphecidae)Howard Ensign Evans, Robert W. Matthews · First published 1973Open the Tome
Ecological-behavioral studies of the wasps of Jackson Hole, WyomingHoward Ensign Evans · First published 1970Open the Tome
Bredin-Archbold-Smithsonian biological survey of DominicaHoward Ensign Evans · First published 1969Open the Tome
The comparative ethology and evolution of the sand waspsHoward Ensign Evans · First published 1966Open the Tome
A revision of the genus Apenesia in Americas (Hymenoptera, Bethylidae)Howard Ensign Evans · First published 1963Open the Tome
Studies on the Comparative Ethology of Digger Wasps of the Genus BembixHoward Ensign Evans · First published 1957Open the Tome
A taxonomic study of the Nearctic spider wasps belonging to the tribe PompiliniHoward Ensign Evans · First published 1900Open the Tome
