http://www.collembola.org/key/bilobell.htm - Last updated on 2024.10.31 by Frans Janssens

Checklist of the Collembola: Key to the species of Bilobella from the Balkan

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.

László Dányi, Department of Zoology, Hungarian Natural History Museum, H-1088 Budapest, Hungary.
Frans Janssens, Department of Biology, University of Antwerp, Antwerp, B-2020, Belgium

Rationale

Key

1(0). Dorsoexternal tubercle of second thoracic segment with four chaetae (fig.1)............................................. 2 Dorsoexternal tubercle of second thoracic segment with three chaetae..................................................... 7
Fig.1.
2(1). Tubercles of fourth to sixth abdominal segment cylindrically elongated, fingerlike (fig.2a).............................. 3 Tubercles of fourth to sixth abdominal segment hemispheric in shape (fig.2b).............................................. 6
Fig.2.
3(2). Dorsoexternal tubercle of first thoracic segment with three chaetae (fig.3)...................................... mahunkai Dorsoexternal tubercle of first thoracic segment with two chaetae..................................................... 4
Fig.3.
4(3). Dorsoexternal tubercle and dorsolateral tubercle of first to third abdominal segment with 3 and 2 chaetae respectively... 5 Dorsoexternal tubercle and dorsolateral tubercle of first to third abdominal segment with 4 chaetae each............. zekoi
5(4). Integumental granulation forming neither papillae nor reticulation; ratio of long macrochaetae to short macrochaetae : 4-6.5.............................................. digitata Integumental granulation forming reticulation and conifer cone-like papillae; ratio of long macrochaetae to short macrochaetae : about 1.25........................... coiffaiti
6(2). Fused dorsoexternal and dorsolateral tubercle of fourth abdominal segment with five chaetae (fig.4)......... matsakisi Fused dorsoexternal and dorsolateral tubercle of fourth abdominal segment with six chaetae.................... proxima
Fig.4.
7(1). O chaeta on head absent....................................... 8 O chaeta on head present............................... albanica
8(7). Claws with tooth.................................. subaurantiaca Claws without tooth........................................... 9
9(8). Fused dorsointernal and dorsoexternal tubercle of head with 3 chaetae............................................ aurantiaca Fused dorsointernal and dorsoexternal tubercle of head with 4 chaetae.............................................. massoudi

References