Checklist of the Collembola: Key to the species of Onychiurus partim obsiones group |
This key is still under construction. Note that missing figures will be provided as soon as possible. Currently, the key is in the feasibility study phase to find out how to integrate in the checklist in a modular way a key that has been generated with DELTA.
Ighor J. Kaprus,
State Natural History Museum of NAS of Ukraine, UA-79008, L'viv, Ukraine
Frans Janssens,
Department of Biology, University of Antwerp, Antwerp, B-2020, Belgium
1(0). Sense organ of third antennal segment with 4 papillae (fig.1a).. ........................................................... 2 Sense organ of third antennal segment with 5 papillae (fig.1b).. ........................................................... 3 |
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2(1). Formula of parapseudocelli on abdominal sterna as 111000; microsensillum on fourth antennal segment is situated in the triangle formed by a, b and c chaetae (fig.2a)........ vtorovi Formula of parapseudocelli on abdominal sterna as 111011m; microsensillum on fourth antennal segment is situated outside the triangle formed by a, b and c chaetae (fig.2b)...... darii |
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3(1). First thoracic tergum with 6 + 6 setae; distal whorl on tibiotarsi composed of 7 setae.............................. 4 First thoracic tergum with 7 + 7 setae; distal whorl on tibiotarsi composed of 9 setae......................... jaceki |
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4(3). Formula of pseudocelli on abdominal sterna as 00010; sense organ of third antennal segment with 4 guard setae (fig.3a)....... 5 Formula of pseudocelli on abdominal sterna as 00011; sense organ of third antennal segment with 5 guard setae (fig.3b)......... .................................................. sarmaticus |
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5(4). Fifth abdominal tergum with a3 as macrosetae (fig.4a); ventral tube with 1 + 1 setae at base........................ obsiones Fifth abdominal tergum with a3 as microsetae (fig.4b); ventral tube without setae at base..................... orienteuropeus |
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