| Macrotrachela nana; in contrast to Macrotrachela ehrenbergii this is a very small species, rarely exceeding the total length (TL) of 240µm. This whirling specimen from (4) is about 150µm. |
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| Macrotrachela nana, whirling, dorsal view, focal plane on the undivided upper lip (1). The rostrum is oval and is wider than the head. |
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| Macrotrachela nana, same specimen as above, whirling, dorsalventral view, focal plane on the vitellarium with 4 nuclei. The diet of this specimen seems to be partly fungus spores. (1) |
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| Macrotrachela nana, whirling, dorsal view, focal plane on the undivided upper lip. (2) |
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| Macrotrachela nana, dorsoventral view, optical cross-section, focal plane on the trochal columns. The corona is smaller than the head. (2) |
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| Macrotrachela nana, dorsoventral view, optical cross-section, creeping (2) |
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| Macrotrachela nana, two aspects of the head dorsoventral view. Left image: focal plane on the upper lip. right image: focal plane on the trochal columns. The corona is smaller than the head. (2) |
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| Macrotrachela nana, two aspects of the foot with spurs and three toes. (2) |
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| Macrotrachela nana, compressed specimen showing the vitellaria with 4 nuclei each. (2). See also Macrotrachela nana var. ligulata. |
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| Macrotrachela nana, creeping specimen from (3). The arrow points to the short dorsal antenna. |
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| Macrotrachela nana, same specimen from (3). The arrows point to the 4 nuclei of the vitellarium. |
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| Macrotrachela nana, whirling (3). |
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| see also Macrotrachela nana var. ligulata and Macrotrachela nana var. ligulata from Ross Island, Antarctica |
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| Location: Hattingen Oberstueter (1);Aneboda, Sweden (2); Ossian Sarsfjellet, James I Land, Svalbard (3); Rittner Horn, Schützhütte, South Tirol (4) |
| microhabitat: Tree moss (1);Spagnum moss (2); moss (3); moss on sandstone (4) |
| Date: 05.02. 2013 (1); 16.02.2014 (2); 16.10.2015 (3); 06.10.20120 |
