http://www.collembola.org/key/crypnura.htm - Last updated on 2017.10.31 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
Asghar Falahati, Department of Plant Protection, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
Dariusz Skarzynski, 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). Dorso-internal tubercle on first thoracic segment with 1 chaeta.
         ........................................................... 2
      Dorso-internal tubercle on first thoracic segment with 2
        chaetae..................................................... 5
 
2(1). Chaeta C on head absent; dorso-internal tubercle on fifth
        abdominal segment with 2 chaetae; mandible with 6 teeth.......
         ................................................ anthrenoidea
      Chaeta C on head present; dorso-internal tubercle on fifth
        abdominal segment with 3 chaetae; mandible with 3 teeth..... 3
 
3(2). Body colour bluish-gray; group vi of head with 6 chaetae; labral
        formula: 0/2, 2; dorsal tubercles triangular................ 4
      Body colour white; group vi of head with 5 chaetae; labral
        formula: 4/2, 4; dorsal tubercles round............. jubilaria
 
4(3). Dorso-lateral tubercle on head with 5 chaetae; labrum distally
        ogival; dorso-internal tubercles on second and third thoracic
        segment with 2 chaetae................................ persica
      Dorso-lateral tubercle on head with 6 chaetae; labrum
        non-ogival; dorso-internal tubercles on second and third
        thoracic segment with 3 chaetae........................ maxima
 
5(1). Chaeta C on head absent; lateral tubercles on second to third
        abdominal segment with 4 chaetae.................. dirfysensis
      Chaeta C on head present; lateral tubercles on second to third
        abdominal segment with other number of chaetae.............. 6
 
6(5). Dorso-external tubercle on second thoracic segment with 3
        chaetae; lateral tubercles on second to third abdominal
        segment with 3 chaetae.............................. kuehnelti
      Dorso-external tubercle on second thoracic segment with 4
        chaetae; lateral tubercles on second to third abdominal
        segment with 2 chaetae................................. franzi

Differential diagnoses

anthrenoidea
Chaeta C on head absent. Dorso-internal tubercle on fifth abdominal segment with 2 chaetae. Dorso-internal tubercle on first thoracic segment with 1 chaeta. Mandible with 6 teeth.

dirfysensis
Chaeta C on head absent. Dorso-internal tubercle on first thoracic segment with 2 chaetae. Lateral tubercles on second to third abdominal segment with 4 chaetae.

franzi
Chaeta C on head present. Dorso-external tubercle on second thoracic segment with 4 chaetae. Dorso-internal tubercle on first thoracic segment with 2 chaetae. Lateral tubercles on second to third abdominal segment with other number of chaetae. Lateral tubercles on second to third abdominal segment with 2 chaetae.

jubilaria
Body colour white. Chaeta C on head present. Dorsal tubercles round. Dorso-internal tubercle on fifth abdominal segment with 3 chaetae. Dorso-internal tubercle on first thoracic segment with 1 chaeta. Group vi of head with 5 chaetae. Labral formula: 4/2, 4. Mandible with 3 teeth.

kuehnelti
Chaeta C on head present. Dorso-external tubercle on second thoracic segment with 3 chaetae. Dorso-internal tubercle on first thoracic segment with 2 chaetae. Lateral tubercles on second to third abdominal segment with other number of chaetae. Lateral tubercles on second to third abdominal segment with 3 chaetae.

maxima
Body colour bluish-gray. Chaeta C on head present. Dorsal tubercles triangular. Dorso-internal tubercle on fifth abdominal segment with 3 chaetae. Dorso-internal tubercle on first thoracic segment with 1 chaeta. Dorso-internal tubercles on second and third thoracic segment with 3 chaetae. Dorso-lateral tubercle on head with 6 chaetae. Group vi of head with 6 chaetae. Labral formula: 0/2, 2. Labrum non-ogival. Mandible with 3 teeth.

persica
Body colour bluish-gray. Chaeta C on head present. Dorsal tubercles triangular. Dorso-internal tubercle on fifth abdominal segment with 3 chaetae. Dorso-internal tubercle on first thoracic segment with 1 chaeta. Dorso-internal tubercles on second and third thoracic segment with 2 chaetae. Dorso-lateral tubercle on head with 5 chaetae. Group vi of head with 6 chaetae. Labral formula: 0/2, 2. Labrum distally ogival. Mandible with 3 teeth.


References