| Checklist of the Collembola: Key to the species of Anurida |
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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.
1(0). Eyepatch with 7 + 7 or 8 + 8 ocelli.................... luciae
Eyepatch with less than 7 + 7 ocelli........................ 2
2(1). Mandibular teeth 10 or less................................. 3
Mandibular teeth more than 10......................... amorita
3(2). Terga pluri-chaetotic....................................... 4
Terga without additional chaetae............................ 5
4(3). Colour dark.......................................... maritima
Colour white without dark pigment, even without eye spots.....
.................................................. hammerae
5(3). Axial group on second and third thoracic segment with 1
p-chaeta, either p1 or p2................................. 6
Axial group on second and third thoracic segment with 2
p-chaeta, p1 or p2 (fig.4)................................ 8
6(5). Sensilla p3 on second and third thoracic segment anterior to
chaeta p4................................................. 7
Sensilla p3 on second and third thoracic segment level with or
posterior to chaeta p4.......................... ellipsoides
7(6). Fourth to fifth abdominal segment with a3 chaeta........ narli
Fourth to fifth abdominal segment without a3 chaeta... reducta
8(5). Second and third thoracic segment in anterior position both p2
and p3.................................................... 9
Second and third thoracic segment in anterior position only
one chaeta, either p2 or p3, or both of them level with or
posterior to other p-chaeta.............................. 10
9(8). First thoracic segment with many chaetae in more than 1 row...
.................................................. hammerae
First thoracic segment with not more than 4 + 4 chaetae in
single row.......................................... beringi
10(8). Ocelli absent.............................................. 11
Ocelli present............................................. 17
11(10). Second and third thoracic segment sensilla p3 anterior to p4..
.................................................. granaria
Second and third thoracic segment sensilla p3 levelling with
or posterior to p4....................................... 12
12(11). Fourth antennal segment with 2 lateral sensilla............ 13
Fourth antennal segment with 2 usual lateral sensilla, a and
b................................................ martynovae
Fourth antennal segment with additional sensillum in lateral
group.................................................... 15
13(12). Mandibular apical teeth in a line with other teeth. subarctica
Mandibular apical teeth in an oblique row.................. 14
14(13). Maxillary third lamella serrate (fig.3)............ annatshagi
Maxillary third lamella with 2 hooks (fig.32)....... sakhensis
15(12). Second and third thoracic segment chaeta p2 anterior to p1....
................................................... similis
Second and third thoracic segment chaeta p2 posterior to p1...
........................................................ 16
16(15). First thoracic segment with 2 + 2 chaetae between subcoxal
macrochaetae........................................ polaris
First thoracic segment with 4 + 4 chaetae between subcoxal
macrochaetae.................................. thalassophila
17(10). Eye spots dark............................................. 18
Eye spots without pigment.................................. 27
18(17). Head with 3 + 3 ocelli..................................... 19
Head with 4 + 4 ocelli..................................... 21
Head with 5 + 5 ocelli..................................... 25
19(18). Maxillary third lamella serrate............................ 20
Maxillary third lamella with 2 hooks................. interior
20(19). Mandibular apical teeth in a line with other teeth.. granulata
Mandibular apical teeth in an oblique row (fig.2).............
.............................................. bondarenkoae
21(18). Maxillary third lamella serrate................. papillosoides
Maxillary third lamella with 2 hooks....................... 22
22(21). Fifth abdominal segment with p2 chaeta, sensilla p3 clearly
moved anteriorly (fig.23)......................... papillosa
Fifth abdominal segment without p2 chaeta, sensilla p3 level
with other p-chaetae..................................... 23
23(22). Mandible with 3 + 2 teeth.................................. 24
Mandible with 4 small apical teeth followed by 2 strong ones..
............................................. parapapillosa
24(23). Fourth antennal segment with 2 additional lateral sensilla....
.................................................... weberi
Fourth antennal segment with 4-6 additional sensilla (fig.25).
................................................ kolymensis
Fourth antennal segment with usual set of sensilla (fig.5)....
.................................................... azurea
25(18). Second and third thoracic segment in front of p3-p4 with 2
chaetae of a-row......................................... 26
Second and third thoracic segment in front of p3-p4 with one
chaeta of a-row, a4............................ decemoculata
26(25). Maxillary third lamella serrate..................... tullbergi
Maxillary third lamella with 2 hooks................ palustris
27(17). First to fourth abdominal segment with 2 + 2 p-chaetae between
sensilla............................................. alpina
First to fourth abdominal segment with 3 + 3 p-chaetae between
sensilla (fig.35).................................. tatianae