http://www.collembola.org/key/callyini.htm - Last updated on 2017.09.30 by Frans Janssens
Checklist of the Collembola: Key to the genera of Callyntrurini

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.

Saral K. Mitra, Zoological Survey of India, Calcutta, West Bengal, India
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). Ocular seta oc2 always macrochaeta; ocular setae not more than
        3................................................... Idiomerus
      Ocular seta oc2 microchaeta, as well as other ocular setae;
        ocular setae at least 3..................................... 2
 
2(1). Ocular setae 3................................................ 3
      Ocular setae always more than 3................. Pseudoparonella
 
3(2). Cephalic area occipitalis always with 2 macrochaetae: O1
        (fig.1a); cephalic area genalis always with G1 and G2 present
        as macrochaetae (fig.1a)................... Dicranocentroides
      Cephalic area occipitalis always without macrochaetae (fig.1b);
        cephalic area genalis with G1 only, which may be absent in
        some species (fig.1b)............................ Callyntrura

Fig.1.
 


Endnotes

1 Lawrenceana and Parachaetoceras not included in key.


Differential diagnoses

Callyntrura
Cephalic area genalis with G1 only, which may be absent in some species (fig.1b). Cephalic area occipitalis always without macrochaetae (fig.1b). Ocular seta oc2 microchaeta, as well as other ocular setae. Ocular setae at least 3. Ocular setae 3.

Dicranocentroides
Cephalic area genalis always with G1 and G2 present as macrochaetae (fig.1a). Cephalic area occipitalis always with 2 macrochaetae: O1 (fig.1a). Ocular seta oc2 microchaeta, as well as other ocular setae. Ocular setae at least 3. Ocular setae 3.

Idiomerus
Ocular seta oc2 always macrochaeta. Ocular setae not more than 3.

Pseudoparonella
Ocular seta oc2 microchaeta, as well as other ocular setae. Ocular setae at least 3. Ocular setae always more than 3.


References