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Keywords from Image Description:
Lymnaea stagnalis Swamp lymnaea Elst Gld the Netherlands. en Lymnaea stagnalis Swamp lymnaea on its back springtail species Sminthurides aquaticus white and Podura aquatica dark Elst Gld the Netherlands nl Lymnaea stagnalis Gewone poelslak met op z'n rug springstaartsoorten Sminthurides aquaticus wit en Podura aquatica donker Elst