http://www.collembola.org/key/ceraella.htm - Last updated on 2017.10.31 by Frans Janssens
Checklist of the Collembola: Key to the species of Ceratophysella from Belgium

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.

Hans-Jürgen Schulz, Staatliches Museum für Naturkunde Görlitz, Germany
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). Sixth abdominal segment with seta p1 shorter than seta p2.......
         ................................................. denticulata
      Sixth abdominal segment with seta p1 longer than seta p2...... 2
 
2(1). Anterior part of dens without apical swelling; anal spine longer
        than 1/2 the inner edge of the metaclaw; seta m2 on mesothorax
        absent................................................. armata
      Anterior part of dens with large apical swelling; anal spine
        shorter than 1/2 the inner edge of the metaclaw; seta m2 on
        mesothorax usually present......................... bengtssoni

Differential diagnoses

armata
Sixth abdominal segment with seta p1 longer than seta p2. Anterior part of dens without apical swelling. Anal spine longer than 1/2 the inner edge of the metaclaw. Seta m2 on mesothorax absent.

bengtssoni
Sixth abdominal segment with seta p1 longer than seta p2. Anterior part of dens with large apical swelling. Anal spine shorter than 1/2 the inner edge of the metaclaw. Seta m2 on mesothorax usually present.

denticulata
Sixth abdominal segment with seta p1 shorter than seta p2.


References