H. Radclyffe Roberts, American entomologist (born 1906)

Howard Radclyffe Roberts Jr. was an American entomologist known for his work on grasshoppers. His 1941 University of Pennsylvania Ph.D. dissertation was an early work highlighting the role phallic structures could play in grasshopper taxonomy. While serving in World War II, he and Edward Shearman Ross cowrote The Mosquito Atlas, used by the armed forces to identify malaria-transmitting mosquitos. Roberts worked for the Academy of Natural Sciences of Philadelphia (ANSP), serving as its managing director from 1947 to 1972. He described dozens of grasshopper species from North and South America, and also is the eponym of several taxa named in his honor.

June 11 is the 162nd day of the year in the Gregorian calendar; 203 days remain until the end of the year.