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

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.

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.
Yan Gao, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Shanghai, 200032 China.
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.......................................... africana
        Eyes present................................................ 2
 
2(1).   Eyes 2 per side..................................... furculata
        Eyes more than 2 per side................................... 3
 
3(2).   Eyes 4, 5 or 6 per side..................................... 4
        Eyes 7 per side............................................ 12
 
4(3).   Eyes 4 per side................................... arawakensis
        Eyes 5 or 6 per side........................................ 5
 
5(4).   Eyes 5 per side............................................. 6
        Eyes 6 per side............................................. 9
 
6(5).   Mandible with three to six teeth............................ 7
        Mandible with two teeth................................. arlei
 
7(6).   Body one colour............................................. 8
        Body with two colour, gray or gray-blue, except for part of
          head and thorax which are white.............. grandcolasorum
 
8(7).   Postantennal organ circular, and 8-9 vesicles...... belemensis
        Postantennal organ elliptical, and 15 vesicles.. guatemalensis
 
9(5).   Mandible with four tee..................................... 10
        Mandible with ten teeth....................... longisensillata
 
10(9).  Retinaculum with 2 + 2 teeth............................... 11
        Retinaculum with 3 + 3 teeth.......................... ashrafi
 
11(10). Postantennal organ with 11 tubercles.......... duodecimoculata
        Postantennal organ with 6 tubercles................ nessimiani
 
12(3).  Fourth antennal segment with 6 sensilla; mandible with 2
          teeth; postantennal organ with 15 vesicles.... septemoculata
        Fourth antennal segment with 7 sensilla; mandible with 4
          teeth; postantennal organ with 7-10 vesicles...... goeldiana

Differential diagnoses

africana
Eyes absent.

arawakensis
Eyes present. Eyes more than 2 per side. Eyes 4, 5 or 6 per side. Eyes 4 per side.

arlei
Eyes present. Eyes more than 2 per side. Eyes 4, 5 or 6 per side. Eyes 5 or 6 per side. Eyes 5 per side. Mandible with two teeth.

ashrafi
Eyes present. Eyes more than 2 per side. Eyes 4, 5 or 6 per side. Eyes 5 or 6 per side. Eyes 6 per side. Mandible with four tee. Retinaculum with 3 + 3 teeth.

belemensis
Body one colour. Eyes present. Eyes more than 2 per side. Eyes 4, 5 or 6 per side. Eyes 5 or 6 per side. Eyes 5 per side. Mandible with three to six teeth. Postantennal organ circular, and 8–9 vesicles.

duodecimoculata
Eyes present. Eyes more than 2 per side. Eyes 4, 5 or 6 per side. Eyes 5 or 6 per side. Eyes 6 per side. Mandible with four tee. Postantennal organ with 11 tubercles. Retinaculum with 2 + 2 teeth.

furculata
Eyes present. Eyes 2 per side.

goeldiana
Eyes present. Eyes more than 2 per side. Eyes 7 per side. Fourth antennal segment with 7 sensilla. Mandible with 4 teeth. Postantennal organ with 7–10 vesicles.

grandcolasorum
Body with two colour, gray or gray-blue, except for part of head and thorax which are white. Eyes present. Eyes more than 2 per side. Eyes 4, 5 or 6 per side. Eyes 5 or 6 per side. Eyes 5 per side. Mandible with three to six teeth.

guatemalensis
Body one colour. Eyes present. Eyes more than 2 per side. Eyes 4, 5 or 6 per side. Eyes 5 or 6 per side. Eyes 5 per side. Mandible with three to six teeth. Postantennal organ elliptical, and 15 vesicles.

longisensillata
Eyes present. Eyes more than 2 per side. Eyes 4, 5 or 6 per side. Eyes 5 or 6 per side. Eyes 6 per side. Mandible with ten teeth.

nessimiani
Eyes present. Eyes more than 2 per side. Eyes 4, 5 or 6 per side. Eyes 5 or 6 per side. Eyes 6 per side. Mandible with four tee. Postantennal organ with 6 tubercles. Retinaculum with 2 + 2 teeth.

septemoculata
Eyes present. Eyes more than 2 per side. Eyes 7 per side. Fourth antennal segment with 6 sensilla. Mandible with 2 teeth. Postantennal organ with 15 vesicles.


References