Ruth Colvin Starrett McGuire

Ruth Starrett McGuire ( Colvin; February 19, 1893 – September 2, 1950) was an American plant pathologist. She studied sugar cane diseases and sugarbeets. She was married to Francis Brenton Starrett (in 1925), and secondly, to Charles McGuire (in 1940).

Career McGuire started work at the United States Department of Agriculture. She retired with the title of Associate Cytologist. She did not stop working after retirement. She served as a research associate at the California Academy of Sciences from 1931 until 1942. While there, she studied the relationships between birds and insects. She also studied sugarcane, sugarbeets, bees, silkworms, beetles and mosquitoes. McGuire was a member of the Botanical Society of Washington, the Entomological Society of America, and the International Society of Sugar Cane Technologists. she was survived by her husband and her brother. She is buried at Arlington National Cemetery.