http://www.collembola.org/key/stachoru.htm - Last updated on 2009.09.30 by Frans Janssens
Checklist of the Collembola: Key to the species of Stachorutes

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.

L'ubomír Kovác, Institute of Zoology, Slovak Academy of Sciences, Kosice, SK-04001, Slaovakia
Jean-Marc Thibaud, Laboratoire d'Entomologie, Museum National d'Histoire Naturelle, 75005 Paris, France
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.
Rafael Jordana, Department of Zoology and Ecology, Faculty of Science, University of Navarra, 31080 Pamplona, Spain
Adrian Smolis, Zoological Institute, University of Wroclaw, Przybyszewskiego 63/77, 51-148 Wroclaw, Poland
Julja B. Shvejonkova, State Nature Reserve "Privolzhskaya lesostep", Okruzhnaya 12a, 440031 Penza, Russia
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).   Eyes absent......................................... escobarae
        Eyes present................................................ 2
 
2(1).   Eyes 1 + 1.................................................. 3
        Eyes more than 1 + 1........................................ 4
 
3(2).   Dens with 5 setae; fourth antennal segment with 5 flame-shaped
          sensillae; mucro absent........................... jizuensis
        Dens with 6 setae; fourth antennal segment with 6 cylindrical
          sensillae; mucro fused to dens..................... tatricus
 
4(2).   Eyes 2 + 2.................................................. 5
        Eyes more than 2 + 2........................................ 8
 
5(4).   Dens with 4 + 4 setae....................................... 6
        Dens with 5 + 5 setae....................................... 7
 
6(5).   Mucro absent; retinaculum with 2 + 2 teeth......... dematteisi
        Mucro fused to dens; retinaculum with 3 + 3 teeth........ maya
 
7(5).   Mucro absent; retinaculum with 3 + 3 teeth...... sphagnophilus
        Mucro present; retinaculum with 2 + 2 teeth........... dallaii
 
8(4).   Eyes 3 + 3....................................... triocellatus
        Eyes more than 3 + 3........................................ 9
 
9(8).   Eyes 4 + 4........................................... gracilis
        Eyes more than 4 + 4....................................... 10
 
10(9).  Eyes 5 + 5................................................. 11
        Eyes 6 + 6............................................. ruseki
 
11(10). Dens with 4 setae....................................... tieni
        Dens with more than 4 setae................................ 12
 
12(11). Dens with 5 + 5 setae...................................... 13
        Dens with 6 + 6 setae...................................... 14
 
13(12). Bucal cone long.................................. longirostris
        Bucal cone short.............................. valdeaibarensis
 
14(12). Bucal cone short; retinaculum with 2 + 2 teeth; seta a0 on
          head present; seta m4 on mesonotum and fourth abdominal
          tergite present.................................. navajellus
        Bucal cone stout; retinaculum with 3 + 3 teeth; seta a0 on
          head absent; seta m4 on mesonotum and fourth abdominal
          tergite absent...................................... scherae

Endnotes

1 Thibaud & Palacios-Vargas (2000:107):
"Barra (1994) described Stachorutes riebi from littoral dunes of Natal (South Africa), but is not a real Stachorutes because the postantennal organ is moruliform (17-18 vesicles) and has a different sensorial organ on Ant. III."

2 Barra (2001:in litt.):
"Stachorutes riebi n'entre dans aucun genre connu, il s'agit d'un genre nouveau proche de Intermediurida et de Venezuelida."

3 Barra (2002:177):
"A new genus, Najtafrica n. gen., is created for the species Stachorutes riebi Barra, 1994 and a redescription of this species is given."

Differential diagnoses

dallaii
Dens with 5 + 5 setae. Eyes present. Eyes more than 1 + 1. Eyes 2 + 2. Mucro present. Retinaculum with 2 + 2 teeth.

dematteisi
Dens with 4 + 4 setae. Eyes present. Eyes more than 1 + 1. Eyes 2 + 2. Mucro absent. Retinaculum with 2 + 2 teeth.

escobarae
Eyes absent.

gracilis
Eyes present. Eyes more than 1 + 1. Eyes more than 2 + 2. Eyes more than 3 + 3. Eyes 4 + 4.

jizuensis
Dens with 5 setae. Eyes present. Eyes 1 + 1. Fourth antennal segment with 5 flame-shaped sensillae. Mucro absent.

longirostris
Bucal cone long. Dens with more than 4 setae. Dens with 5 + 5 setae. Eyes present. Eyes 5 + 5. Eyes more than 1 + 1. Eyes more than 2 + 2. Eyes more than 3 + 3. Eyes more than 4 + 4.

maya
Dens with 4 + 4 setae. Eyes present. Eyes more than 1 + 1. Eyes 2 + 2. Mucro fused to dens. Retinaculum with 3 + 3 teeth.

navajellus
Bucal cone short. Dens with more than 4 setae. Dens with 6 + 6 setae. Eyes present. Eyes 5 + 5. Eyes more than 1 + 1. Eyes more than 2 + 2. Eyes more than 3 + 3. Eyes more than 4 + 4. Retinaculum with 2 + 2 teeth. Seta a0 on head present. Seta m4 on mesonotum and fourth abdominal tergite present.

ruseki
Eyes present. Eyes 6 + 6. Eyes more than 1 + 1. Eyes more than 2 + 2. Eyes more than 3 + 3. Eyes more than 4 + 4.

scherae
Bucal cone stout. Dens with more than 4 setae. Dens with 6 + 6 setae. Eyes present. Eyes 5 + 5. Eyes more than 1 + 1. Eyes more than 2 + 2. Eyes more than 3 + 3. Eyes more than 4 + 4. Retinaculum with 3 + 3 teeth. Seta a0 on head absent. Seta m4 on mesonotum and fourth abdominal tergite absent.

sphagnophilus
Dens with 5 + 5 setae. Eyes present. Eyes more than 1 + 1. Eyes 2 + 2. Mucro absent. Retinaculum with 3 + 3 teeth.

tatricus
Dens with 6 setae. Eyes present. Eyes 1 + 1. Fourth antennal segment with 6 cylindrical sensillae. Mucro fused to dens.

tieni
Dens with 4 setae. Eyes present. Eyes 5 + 5. Eyes more than 1 + 1. Eyes more than 2 + 2. Eyes more than 3 + 3. Eyes more than 4 + 4.

triocellatus
Eyes present. Eyes more than 1 + 1. Eyes more than 2 + 2. Eyes 3 + 3.

valdeaibarensis
Bucal cone short. Dens with more than 4 setae. Dens with 5 + 5 setae. Eyes present. Eyes 5 + 5. Eyes more than 1 + 1. Eyes more than 2 + 2. Eyes more than 3 + 3. Eyes more than 4 + 4.

References