Description: English: Sminthurides aquaticus (Sminthurididae sp.) (white) and Podura aquatica (Poduridae sp.) (dark) on the back of a swamp lymnaea, Elst (Gld), the NetherlandsNederlands: Sminthurides aquaticus (Sminthurididae soort) (wit) en Podura aquatica (Zwarte waterspringstaart) (donker) op de rug van een poelslak, Elst (Gld), Nederland. Date: 24 March 2014, 12:00:00. Source: Own work. Author: Bj.schoenmakers. Other versions: . Camera location51° 56′ 33.88″ N, 5° 50′ 51.46″ EView all coordinates using: OpenStreetMap 51.942744; 5.847627.