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

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.

Romuald J. Pomorski, Zoological Institute, Wroclaw University, Sienkiewicza 21, Pl-50-335 Wroclaw, Poland
Yulija B. Sveenkova, State Nature Reserve "Privolzhskaya Lesostep" Okruzhnaya 12a, 440008 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). Anal spines absent; sense organ of third antennal segment with 4
        papillae.................................................... 2
      Anal spines present; sense organ of third antennal segment with
        5 papillae............................................ geminus
 
2(1). Tibiotars with 7 distal setae; unguiculus length half inner edge
        of unguis.......................................... minusculus
      Tibiotars with 9 distal setae; unguiculus length third of inner
        edge of unguis....................................... virginis

Differential diagnoses

geminus
Anal spines present. Sense organ of third antennal segment with 5 papillae.

minusculus
Anal spines absent. Sense organ of third antennal segment with 4 papillae. Tibiotars with 7 distal setae. Unguiculus length half inner edge of unguis.

virginis
Anal spines absent. Sense organ of third antennal segment with 4 papillae. Tibiotars with 9 distal setae. Unguiculus length third of inner edge of unguis.

References