Ezra Townsend Cresson (1838-1926)
Ezra Townsend Cresson, also Ezra Townsend senior (18 June 1838, Byberry - 19 April 1926, Swarthmore) was an American entomologist who specialised in Hymenoptera. He wrote Synopsis of the families and genera of the Hymenoptera of America, north of Mexico Philadelphia: Paul C. Stockhausen, Entomological printer (1887) and many other works. His son Ezra Townsend, Jr. (1876-1948) was also an entomologist but a specialist in Diptera.
Cresson, E. T. 1887. Synopsis of the families and genera of the Hymenoptera of America, north of Mexico, together with a catalogue of the described species, and bibliography. Trans. Am. Entomol. Soc., Suppl. Vol. 1887: 1-351