| Proales doliaris, dorsal view, focal plane on the cerebral eyespot. |
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| Proales doliaris, lateral view. P. doliaris has only one toe (1) |
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| Proales doliaris, two aspects of the trophi. |
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| Proales doliaris, specimen of sample (2); arrowhead points to the single toe. |
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| Proales doliaris, specimen from (3); lateral view; feeding on bacterial growth of Mougeotia algal filaments. |
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| Proales doliaris, specimen from (4); lateral view. |
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| Fundort: NSG Heiliges Meer; near Erdfallsee; Litoral sample (1,2); Mariapeel/ Griendsveen/ NL (3;4) |
| Habitat: Sphagnum/ Utricularia (1/2); Spahgnum pond (3;4) |
| Date: 27.05.2012 (1); 19.06.2013 (2); 18.09.2016 (3); 15.11.2018 (4) |
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