Description: Français : Branchipus stagnalis - variations du postabdomen en fonction de la salinité du milieu. Date: 3 December 2011. Source: Le Monde végétal , Ernest Flammarion, 1907. Author: Gaston Bonnier.
Description: English: Fig36 from Darwinism by Alfred Russel Wallace, 1889. Date: 23 June 2012. Source: Project Gutenberg EBook #14558 Darwinism 1889. Author: Alfred Russel Wallace.