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

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.

Gabriella Castaño-Meneses, Laboratorio de Ecologia y Sistemática de Microartrópodos, Departamento de Biologia, Facultad de Ciensas, Universidad Nacional Autónoma de México, México D.F.
José G. Palacios-Vargas, Laboratorio de Ecologia y Sistemática de Microartrópodos, Departamento de Biologia, Facultad de Ciensas, Universidad Nacional Autónoma de México, México D.F.
György Traser, Institute of Forest and Wood Protection, University Sopron, H-9401 Ady Endre u. 5. H-9401 Sopron PoB. 132, Hungary.

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). Median process spiniform; postantennal organ with 20-25 simple
        vesicles.................................................... 2
      Median process spiniform or stout; postantennal organ with 18-25
        bilobated or trilobated vesicles............................ 6
 
2(1). Thorax i with pseudocelli..................................... 3
      Thorax i without pseudocelli.................................. 5
 
3(2). Body color blue; empodial appendage absent........... triacantha
      Body color white; empodial appendage setiform................. 4
 
4(3). Pseudocellar formula 11/111/11111....................... affinis
      Pseudocellar formula 11/122/22221........................ denisi
 
5(2). Postantennal organ with 20 vesicles...................... ellisi
      Postantennal organ with 25 vesicles................... knowltoni
 
6(1). Empodial appendage absent; thorax i without pseudocelli.........
         ................................................... bipartita
      Empodial appendage setiform; thorax i with pseudocelli........ 7
 
7(6). Pseudocellar formula 11/111/11111........................ incisa
      Pseudocellar formula not 11/111/11111......................... 8
 
8(7). Pseudocellar formula 11/111/11121....................... orestia
      Pseudocellar formula 11/122/22221........................ riozoi

Differential diagnoses

affinis
Body color white. Empodial appendage setiform. Median process spiniform. Postantennal organ with 20–25 simple vesicles. Pseudocellar formula 11/111/11111. Thorax i with pseudocelli.

bipartita
Empodial appendage absent. Median process spiniform or stout. Postantennal organ with 18–25 bilobated or trilobated vesicles. Thorax i without pseudocelli.

denisi
Body color white. Empodial appendage setiform. Median process spiniform. Postantennal organ with 20–25 simple vesicles. Pseudocellar formula 11/122/22221. Thorax i with pseudocelli.

ellisi
Median process spiniform. Postantennal organ with 20–25 simple vesicles. Postantennal organ with 20 vesicles. Thorax i without pseudocelli.

incisa
Empodial appendage setiform. Median process spiniform or stout. Postantennal organ with 18–25 bilobated or trilobated vesicles. Pseudocellar formula 11/111/11111. Thorax i with pseudocelli.

knowltoni
Median process spiniform. Postantennal organ with 20–25 simple vesicles. Postantennal organ with 25 vesicles. Thorax i without pseudocelli.

orestia
Empodial appendage setiform. Median process spiniform or stout. Postantennal organ with 18–25 bilobated or trilobated vesicles. Pseudocellar formula not 11/111/11111. Pseudocellar formula 11/111/11121. Thorax i with pseudocelli.

riozoi
Empodial appendage setiform. Median process spiniform or stout. Postantennal organ with 18–25 bilobated or trilobated vesicles. Pseudocellar formula not 11/111/11111. Pseudocellar formula 11/122/22221. Thorax i with pseudocelli.

triacantha
Body color blue. Empodial appendage absent. Median process spiniform. Postantennal organ with 20–25 simple vesicles. Thorax i with pseudocelli.


References