http://www.collembola.org/key/harveyi.htm - Last updated on 2017.06.30 by Frans Janssens
Checklist of the Collembola: Key to the species of the harveyi group of Arrhopalites

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.

Robert S. Vargovitsh, Schmalhausen Institute of Zoology NAS of Ukraine, Kiev, 01601, Ukraine
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). Upper anal valve of sixth abdominal segment with 2 + 2 cuticular
        spines................................................ harveyi
      Upper anal valve of sixth abdominal segment with more than 4
        cuticular spines............................................ 2
 
2(1). Upper anal valve of sixth abdominal segment with 2 + 1 + 2
        cuticular spines............................................ 3
      Upper anal valve of sixth abdominal segment with 3 + 3 cuticular
        spines............................................... anulifer
 
3(2). Eyes 1 + 1.................................................... 4
      Eyes 2 + 2.................................................... 9
 
4(3). Claw of first leg with tunica................................. 5
      Claw of first leg without tunica.............................. 6
 
5(4). Fourth antennal segment undivided and indistinctly ringed.......
         ............................................... alambariensis
      Fourth antennal segment with 5 distinct ringed subsegments......
         ................................................... vazquezae
 
6(4). Claw of first leg with inner tooth............................ 7
      Claw of first leg without inner tooth......................... 8
 
7(6). Fourth antennal segment with 5 subsegments; seta IIIpe of dens
        spine-like...................................... botuveraensis
      Fourth antennal segment with 6 subsegments; seta IIIpe of dens
        simple............................................ paranaensis
 
8(6). Claw of third leg with tunica; empodium of third leg not
        reaching tip of claw; claw of second leg with tunica..........
         ................................................... gnaspinii
      Claw of third leg without tunica; empodium of third leg with
        apical filament overtopping tip of claw; claw of second leg
        without tunica...................................... lawrencei
 
9(3). Empodium of first leg with corner tooth; fourth antennal segment
        with 6 subsegments; anterior pair of eyes much smaller than
        posterior pair; claw of first leg without tunica..............
         ............................................... heteroculatus
      Empodium of first leg without corner tooth; fourth antennal
        segment with 4 subsegments; anterior and posterior eyes of
        subequal size; claw of first leg with tunica.......... amorimi

Differential diagnoses

alambariensis
Claw of first leg with tunica. Eyes 1 + 1. Fourth antennal segment undivided and indistinctly ringed. Upper anal valve of sixth abdominal segment with more than 4 cuticular spines. Upper anal valve of sixth abdominal segment with 2 + 1 + 2 cuticular spines.

amorimi
Anterior and posterior eyes of subequal size. Claw of first leg with tunica. Empodium of first leg without corner tooth. Eyes 2 + 2. Fourth antennal segment with 4 subsegments. Upper anal valve of sixth abdominal segment with more than 4 cuticular spines. Upper anal valve of sixth abdominal segment with 2 + 1 + 2 cuticular spines.

anulifer
Upper anal valve of sixth abdominal segment with more than 4 cuticular spines. Upper anal valve of sixth abdominal segment with 3 + 3 cuticular spines.

botuveraensis
Claw of first leg without tunica. Claw of first leg with inner tooth. Eyes 1 + 1. Fourth antennal segment with 5 subsegments. Seta IIIpe of dens spine-like. Upper anal valve of sixth abdominal segment with more than 4 cuticular spines. Upper anal valve of sixth abdominal segment with 2 + 1 + 2 cuticular spines.

gnaspinii
Claw of first leg without tunica. Claw of first leg without inner tooth. Claw of second leg with tunica. Claw of third leg with tunica. Empodium of third leg not reaching tip of claw. Eyes 1 + 1. Upper anal valve of sixth abdominal segment with more than 4 cuticular spines. Upper anal valve of sixth abdominal segment with 2 + 1 + 2 cuticular spines.

harveyi
Upper anal valve of sixth abdominal segment with 2 + 2 cuticular spines.

heteroculatus
Anterior pair of eyes much smaller than posterior pair. Claw of first leg without tunica. Empodium of first leg with corner tooth. Eyes 2 + 2. Fourth antennal segment with 6 subsegments. Upper anal valve of sixth abdominal segment with more than 4 cuticular spines. Upper anal valve of sixth abdominal segment with 2 + 1 + 2 cuticular spines.

lawrencei
Claw of first leg without tunica. Claw of first leg without inner tooth. Claw of second leg without tunica. Claw of third leg without tunica. Empodium of third leg with apical filament overtopping tip of claw. Eyes 1 + 1. Upper anal valve of sixth abdominal segment with more than 4 cuticular spines. Upper anal valve of sixth abdominal segment with 2 + 1 + 2 cuticular spines.

paranaensis
Claw of first leg without tunica. Claw of first leg with inner tooth. Eyes 1 + 1. Fourth antennal segment with 6 subsegments. Seta IIIpe of dens simple. Upper anal valve of sixth abdominal segment with more than 4 cuticular spines. Upper anal valve of sixth abdominal segment with 2 + 1 + 2 cuticular spines.

vazquezae
Claw of first leg with tunica. Eyes 1 + 1. Fourth antennal segment with 5 distinct ringed subsegments. Upper anal valve of sixth abdominal segment with more than 4 cuticular spines. Upper anal valve of sixth abdominal segment with 2 + 1 + 2 cuticular spines.


References