Claim: Gammarus chevreuxi  is a species of crustacean that was first described by Elsie Wilkins Sexton and is a part of the Gammaridae family and belongs to the animalia kingdom.
Evidence: Gammarus chevreuxi is a species of crustacean in the family Gammaridae. It was first described by Elsie Wilkins Sexton in 1913. Family: Gammaridae Kingdom: Animalia