http://www.collembola.org/key/willinae.htm - Last updated on 2021.08.31 by Frans Janssens
Checklist of the Collembola: Key to the genera of Willowsiinae

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.

Feng Zhang, Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
Anne Bedos, Muséum National d'Histoire Naturelle, UMR7205 CNRS, Paris, France
Louis Deharveng, Muséum National d'Histoire Naturelle, UMR7205 CNRS, Paris, France
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).   Scales with long ribs....................................... 2
        Scales with short striations............................... 10
 
2(1).   Dental scales absent........................................ 3
        Dental scales present.............................. Lepidodens
 
3(2).   Eyes absent................................................. 4
        Eyes present................................................ 6
 
4(3).   Mucro bidentate................................. Szeptyckiella
        Mucro falcate............................................... 5
 
5(4).   Macrochaetotaxy strongly reduced................ Lepidosinella
        Macrochaetotaxy well developed...................... Hawinella
 
6(3).   Mucro bidentate............................................. 7
        Mucro falcate............................................... 9
 
7(6).   Scales chaeta-like, narrow; scales finely sculpted with all
          ribs short; scales in posterior row of tergites elongate and
          narrower..................................... Janetschekbrya
        Scales not chaeta-like; scales variously sculpted; scales in
          posterior row of tergites not much longer................. 8
 
8(7).   Scales narrow; scales with two uninterrupted lateral ribs.....
           ............................................... Americabrya
        Scales not narrow; scales with various types of sculpture,
          from very short spinules to long ribs............. Willowsia
 
9(6).   Mucronal basal spine absent.......................... Desertia
        Mucronal basal spine present...................... Drepanosira
 
10(1).  Scales apically pointed.................................... 11
        Scales apically rounded.................................... 12
 
11(10). Sixth abdominal segment with finger like projection (fig.1)..
           ................................................ Epimetrura
        Sixth abdominal segment without finger like projection........
           ................................................ Lepidobrya
 

Fig.1.
 
12(10). Manubrium with distal thick blunt macrochaetae (fig.2).......
           ........................................... Lepidocyrtoides
        Manubrium without distal thick blunt macrochaetae.. Lepidosira

Fig.2.
 



References