| Lecane ludwigii f. stokesi with two posterior projections (arrowheads). L. ludwigii f. ludwigii has one. (1) |
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| Lecane ludwigii f. stokesi, when contracted the antero-lateral spines are visble (arrowheads). (1) |
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| Lecane ludwigii f. stokesi, another specimen from (2). |
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| Location: Gevelsberg, Grünes Klassenzimmer (pond) (1); water reservoir Wuppertalsperre, compensation pond; (2) |
| Habitat: between mosses (1);(2) |
| Date: 03.03.2007 (1); 17.09.2014 (2) |
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