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| Colurella tesselata Glascott, 1893 |
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| Collurella tesselata, lateral view; the frontal part of the lorica has a conspicuos ventral emargination (arrowhead). |
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| Collurella tesselata, lateral view; showing parts of the sculptured surface of the right side of the lorica. |
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| Collurella tesselata, dorsall view; optical transect through the dorsal keel which is typical for this species. |
| Location: Simmelried near Konstanz, Germany |
| Habitat: sphagnum pond |
| Date: col.: 28.09.2017; img.: 07.10.2017 |
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