http://www.collembola.org/key/crypnura.htm - Last updated on 2009.09.30 by Frans Janssens
Checklist of the Collembola: Key to the species of Cryptonura

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.

Adrian Smolis, Department of Biodiversity and Evolutionary Taxonomy, Zoological Institute, Wroclaw University, 51-148 Wroclaw, Poland
Frans Janssens, Department of Biology, University of Antwerp, Antwerp, B-2020, Belgium

Rationale

The rationale for taxa used and not used as well as subtaxonomic classification for some taxa is to be provided.

Key

Note that no distinction between subtaxa and taxa is made in the key. 

1(0). Dorsal tubercles round; tubercle di on first thoracic segment
        with 1 chaeta............................................... 2
      Dorsal tubercles triangular; tubercle di on first thoracic
        segment with 2 chaetae...................................... 3
 
2(1). Chaeta c on head absent; mandible with 6 teeth; tubercle di on
        fifth abdominal segment with 2 chaetae........... anthrenoidea
      Chaeta c on head present; mandible with 3 teeth; tubercle di on
        fifth abdominal segment with 3 chaetae.............. jubilaria
 
3(1). Chaeta c on head absent; tubercles l on second to third
        abdominal segment with 4 chaetae.................. dirfysensis
      Chaeta c on head present; tubercles l on second to third
        abdominal segment with other number of chaetae.............. 4
 
4(3). Tubercle de on second thoracic segment with 3 chaetae; tubercles
        l on second to third abdominal segment with 3 chaetae.........
         ................................................... kuehnelti
      Tubercle de on second thoracic segment with 4 chaetae; tubercles
        l on second to third abdominal segment with 2 chaetae.. franzi

Differential diagnoses

anthrenoidea
Chaeta c on head absent. Dorsal tubercles round. Mandible with 6 teeth. Tubercle di on fifth abdominal segment with 2 chaetae. Tubercle di on first thoracic segment with 1 chaeta.

dirfysensis
Chaeta c on head absent. Dorsal tubercles triangular. Tubercle di on first thoracic segment with 2 chaetae. Tubercles l on second to third abdominal segment with 4 chaetae.

franzi
Chaeta c on head present. Dorsal tubercles triangular. Tubercle de on second thoracic segment with 4 chaetae. Tubercle di on first thoracic segment with 2 chaetae. Tubercles l on second to third abdominal segment with other number of chaetae. Tubercles l on second to third abdominal segment with 2 chaetae.

jubilaria
Chaeta c on head present. Dorsal tubercles round. Mandible with 3 teeth. Tubercle di on fifth abdominal segment with 3 chaetae. Tubercle di on first thoracic segment with 1 chaeta.

kuehnelti
Chaeta c on head present. Dorsal tubercles triangular. Tubercle de on second thoracic segment with 3 chaetae. Tubercle di on first thoracic segment with 2 chaetae. Tubercles l on second to third abdominal segment with other number of chaetae. Tubercles l on second to third abdominal segment with 3 chaetae.

References