Cynthia Longfield

Cynthia Evelyn Longfield (16 August 1896 – 27 June 1991) was an Anglo-Irish entomologist and explorer and the first woman member of the Entomological Society. She was an expert on the dragonfly and was nicknamed "Madame Dragonfly". She travelled extensively and published The Dragonflies of the British Isles in 1937. She worked as a research associate at the Natural History Museum, London, and was the expert on the dragonflies there, particularly on African species.