Checklist of the Collembola: Key to the species of Monobella |
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.
Anne Bedos,
Laboratoire d'Ecologie Terrestre, UMR 5552 du CNRS, UPS, Toulouse Cedex 4, 31062, France
Louis Deharveng,
Laboratoire d'Ecologie Terrestre, UMR 5552 du CNRS, UPS, Toulouse Cedex 4, 31062, France
Frans Janssens,
Department of Biology, University of Antwerp, Antwerp, B-2020, Belgium
1(0). Labrum distally ogival (fig.1).............................. 2 Labrum non-ogival........................................... 4 |
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2(1). Third abdominal segment with the dorso-internal tubercles fused............................................ cassagnaui Third abdominal segment with the dorso-internal tubercles separate.................................................. 3 |
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3(2). Third abdominal segment to second thoracic segment with the dorso-internal and dorso-external tubercles fused.. rostrata Third abdominal segment to second thoracic segment with the dorso-internal and dorso-external tubercles separate (fig.2)........................................... rousseti |
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4(1). First antennal segment with 7 chaetae....................... 5 First antennal segment with 8-9 chaetae.................... 12 |
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5(4). Second thoracic segment with the dorso-internal and dorso-external tubercles fused............................ 6 Second thoracic segment with the dorso-internal and dorso-external tubercles separate......................... 7 |
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6(5). Head with chaetae c always short macrochaetae, at the level of the chaetae b (fig.3a); short macrochaetae broad...... minor Head with chaetae c microchaetae or short macrochaetae, ahead the chaetae b (fig.3b); short macrochaetae thin..... grassei |
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7(5). Fourth abdominal segment with the dorso-external tubercles fused to the dorso-internal tubercles..................... 8 Fourth abdominal segment with the dorso-external tubercles not fused to the dorso-internal tubercles..................... 9 |
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8(7). Head with chaetae di2, de2, dl6 absent or minute microchaetae. ..................................................... calva Head with chaetae di2, de2, dl6 short macrochaetae............ .............................................. prodistincta |
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9(7). Fifth abdominal segment with 6 chaetae, 5 + s, on the tubercle de + dl + l; third abdominal segment with 4 chaetae ve...... ................................................. pyrenaica Fifth abdominal segment with 7-8 chaetae, 6-7 + s on the tubercle de + dl + l, rarely 5 + s on one side; third abdominal segment with 5-7 chaetae ve.................... 10 |
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10(9). Fourth abdominal segment with 6-7 chaetae on the tubercle l... ........................................................ 11 Fourth abdominal segment with 8 chaetae on the tubercle l..... ..................................................... gersi |
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11(10). Body size less than 1.5 mm; second abdominal segment with 5 chaetae ve; short macrochaetae enlarged (fig.4b)... edaphica Body size more than 1.9 mm; second abdominal segment with 6-7 chaetae ve; short macrochaetae thin (fig.4a)............ jau |
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12(4). Fourth abdominal segment with the dorso-external tubercles fused to the dorso-internal tubercles.................... 13 Fourth abdominal segment with the dorso-external tubercles not fused to the dorso-internal tubercles................. dubia |
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13(12). Second thoracic segment with the dorso-internal and dorso-external tubercles fused.................. banyulensis Second thoracic segment with the dorso-internal and dorso-external tubercles separate................. distincta |