Evans Howard E.: ?Howard E. Evans was Professor Emeritus of Entomology, Colorado State University. From 1960 to 1973, he was at Harvard's Museum of Comparative Zoology. He was author of The Comparative Ethology and Evolution of the Sand Wasps and co-author of William Morton Wheeler, Biologist (both from Harvard), among many other books.Evans Howard Ensign: Howard Ensign Evans (1919-2002) was Professor Emeritus of Entomology, Colorado State University, where he taught for 30 years. He headed Harvard's Museum of Comparative Zoology between 1960 and 1973 and was the author of The Comparative Ethology and Evolution of the Sand Wasps and William Morton Wheeler, Biologist (both Harvard) among many other books.