http://www.collembola.org/key/folsomid.htm - Last updated on 2017.10.31 by Frans Janssens
Checklist of the Collembola: Key to the species of Folsomides, partim Ibero-balearic

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.

Javier I. Arbea, Departamento de Ciencias Naturales, IES Alhama, Avda. del Villar, 44, E-31591 Corella, España
Rafael Jordana, Department of Zoology and Ecology, University of Navarra, P.O. Box 177, 31080 Pamplona, Navarra, Spain
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). Mucro absent [nanus-group].................................... 2
      Mucro present................................................. 3
 
2(1). Dens with 2 dorsal chaetae and 1 ventro-apical chaeta; eye with
        5 + 5 corneola; microsensillae 11/111; retinacle with 3 + 3
        teeth and 1 chaeta on corpus...................... ayllonensis
      Dens with 2 dorsal chaetae and no ventro-apical chaeta; eye with
        2 + 2 corneola; microsensillae 10/000; retinacle with 2 + 2
        teeth and 1 chaeta on corpus.................... almanzorensis
 
3(1). Eye with 1-2 + 1-2 corneoles; postantennal organ long and very
        narrow............................................... parvulus
      Eye with 5 + 5 corneoles; postantennal organ short and rounded
        [angularis-group]........................................... 4
 
4(3). Microsensillae 10/xxx......................................... 5
      Microsensillae 11/xxx......................................... 7
 
5(4). Dens with 2 dorsal chaetae; microsensillae 10/000............. 6
      Dens with 3 dorsal chaetae and 1 ventro-apical chaeta;
        microsensillae 10/001............................... angularis
 
6(5). Dens with 1 ventro-apical chaeta................ pocosensillatus
      Dens without ventro-apical chaeta........................ petiti
 
7(4). Microsensillae 11/000............................. mediterraneus
      Microsensillae 11/111......................................... 8
 
8(7). Dens with 1 ventro-apical chaeta and with 4-6 dorsal chaetae....
         ............................................... portucalensis
      Dens without ventro-apical chaeta and with 5 dorsal chaetae.....
         .................................................. xerophilus

Differential diagnoses

almanzorensis
Dens with 2 dorsal chaetae and no ventro-apical chaeta. Eye with 2 + 2 corneola. Microsensillae 10/000. Mucro absent [nanus-group]. Retinacle with 2 + 2 teeth and 1 chaeta on corpus.

angularis
Dens with 3 dorsal chaetae and 1 ventro-apical chaeta. Eye with 5 + 5 corneoles. Microsensillae 10/xxx. Microsensillae 10/001. Mucro present. Postantennal organ short and rounded [angularis-group].

ayllonensis
Dens with 2 dorsal chaetae and 1 ventro-apical chaeta. Eye with 5 + 5 corneola. Microsensillae 11/111. Mucro absent [nanus-group]. Retinacle with 3 + 3 teeth and 1 chaeta on corpus.

mediterraneus
Eye with 5 + 5 corneoles. Microsensillae 11/xxx. Microsensillae 11/000. Mucro present. Postantennal organ short and rounded [angularis-group].

parvulus
Eye with 1–2 + 1–2 corneoles. Mucro present. Postantennal organ long and very narrow.

petiti
Dens without ventro-apical chaeta. Dens with 2 dorsal chaetae. Eye with 5 + 5 corneoles. Microsensillae 10/xxx. Microsensillae 10/000. Mucro present. Postantennal organ short and rounded [angularis-group].

pocosensillatus
Dens with 1 ventro-apical chaeta. Dens with 2 dorsal chaetae. Eye with 5 + 5 corneoles. Microsensillae 10/xxx. Microsensillae 10/000. Mucro present. Postantennal organ short and rounded [angularis-group].

portucalensis
Dens with 1 ventro-apical chaeta and with 4–6 dorsal chaetae. Eye with 5 + 5 corneoles. Microsensillae 11/xxx. Microsensillae 11/111. Mucro present. Postantennal organ short and rounded [angularis-group].

xerophilus
Dens without ventro-apical chaeta and with 5 dorsal chaetae. Eye with 5 + 5 corneoles. Microsensillae 11/xxx. Microsensillae 11/111. Mucro present. Postantennal organ short and rounded [angularis-group].


References