http://www.collembola.org/key/tetracan.htm - Last updated on 2006.11.17 by Frans Janssens
Checklist of the Collembola: Key to the species of Tetracanthella, partim group alpina

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
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). Dens with 2 dorsal and 1 ventral chaetae...................... 2
      Dens with 3 dorsal and 1 ventral chaetae...................... 4

2(1). Manubrium with 8-9 + 8-9 chaetae; postantennal organ/ocellus a
        ratio: 1.5-2; posterior furcal subcoxa with 4 chaetae.........
         ............................................... transylvanica
      Manubrium with 5-7 + 5-7 chaetae; postantennal organ/ocellus a
        ratio: 2.3-3.2; posterior furcal subcoxa with 3 chaetae..... 3

3(2). Anterior furcal subcoxa with 2-3 chaetae................. franzi
      Anterior furcal subcoxa with 4-5 chaetae................ hystrix

4(1). Number of sublobal hairs one; retinaculum with one chaeta..... 5
      Number of sublobal hairs two; retinaculum without chaeta...... 7

5(4). Axial chaetom of abdominal terga i-iv 6-8, 6-8, 6-8, 6-8;
        anterior furcal subcoxa with 9-12 chaetae; manubrium with 9-11
        + 9-11 chaetae; postantennal organ/ocellus a ratio 1.8-2.2;
        posterior furcal subcoxa with 4-5 chaetae.............. alpina
      Axial chaetom of abdominal terga i-iv 4-6, 4-6, 4-6, 6; anterior
        furcal subcoxa not with 9-12 chaetae; manubrium not with 9-11
        + 9-11 chaetae; postantennal organ/ocellus a ratio 2.3-3.8;
        posterior furcal subcoxa not with 4-5 chaetae............... 6

6(5). Manubrium with 6-8 + 6-8 chaetae; anterior furcal subcoxa with
        3-5 chaetae; posterior furcal subcoxa with 3 chaetae.. montana
      Manubrium with 8-9 + 8-9 chaetae; anterior furcal subcoxa with
        6-7 chaetae; posterior furcal subcoxa with 4 chaetae... stachi

7(4). Axial chaetom 12-14, 6-8/6, 6, 6, 6; head with 5 pp chaetae;
        macrochaetotaxy 2/3, 3/3, 3, 3; manubrium with 10-11 + 10-11
        chaetae; posterior furcal subcoxa with 4 chaetae.... carpatica
      Axial chaetom 12, 8/6, 6, 6, 6-8; head with 6-7 pp chaetae;
        macrochaetotaxy 4/3, 3/3, 3 or 4, 3 or 4; manubrium with 8-9 +
        8-9 chaetae; posterior furcal subcoxa with 3 chaetae... gisini

References