Roy Crowson, 1970

"Neither counting nor measuring can however be the most fundamental processes in our study of the material universe — before you can do either to any purpose you must first select what you propose to count or measure, which presupposes a classification."

These studies allowed Crowson to produce a family tree that became a standard in his 1955 publication The Natural Classification of the Families of British Coleoptera . The use of larvae had seldom been attempted before and undoubtedly contributed to its robustness. His book Biology of the Coleoptera (Crowson, 1981) has also become a classic text.

He contributed many important papers on the subject of the British Coleopterous fauna including his discovery in 1942 of Leistus rufomarginatus Duft. as new to Britain.

A total of 13 taxa have been dedicated to Crowson and the beetle family Crowsoniellidae is named in his honour.