http://www.collembola.org/key/tomorina.htm - Last updated on 2009.09.30 by Frans Janssens
Checklist of the Collembola: Key to the species of Tomocerina

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.

Yi-Tong Ma, Department of Biology, Nantong Teacher's College, Nantong 226000, People's Republic of China
Jian-Xiu Chen, Department of Biology, Nanjing University, Nanjing 210093, People's Republic of China
Kenneth A. Christiansen, Department of Biology, Grinnell College, PO Box V3, Grinnell, IA 50112-0806, USA
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). Mucro with at least one intermediate tooth (fig.3b)........... 2
      Mucro without intermediate teeth (fig.3a)................. teres
 
2(1). Corpus of tenaculum with 1 or 2 setae (fig.4b)................ 3
      Corpus of tenaculum with 5 or more setae (fig.4a)............. 9
 
3(2). Eyes 5 + 5........................................... liliputana
      Eyes 6 + 6.................................................... 4
 
4(3). Posterior third of dorsum of the head with 1 or 2 rows of
        macrochaetae (fig.5a, b).................................... 5
      Posterior third of dorsum of the head without rows of
        macrochaetae (fig.5c)....................................... 6
 
5(4). Posterior third of dorsum of the head with 1 row of macrochaetae
        (fig.5a)............................................... minuta
      Posterior third of dorsum of the head with 2 rows of
        macrochaetae (fig.5b).................................. calcea
 
6(4). Tenent hair strongly clavate.................................. 7
      Tenent hair truncate or very weakly clavate............... curta
 
7(6). Posterior half of dorsum of head with 2 macrochaetae............
         ................................................. lamellifera
      Posterior half of dorsum of head with 6 macrochaetae.......... 8
 
8(7). Trochanteral organ with many setae (fig.6b)........... yiliensis
      Trochanteral organ with only a single seta (fig.6a).............
         ............................................... tianshanensis
 
9(2). Dorsum of head with posterior row or rows of macrochaetae
        (fig.5a, b)...................................... purpurithora
      Dorsum of head without posterior row of macrochaetae (fig.5c)...
         ....................................................... aokii

Endnotes

1 Tomocerina simplex Yosii, 1966 is omitted from this key. It is insufficiently described to be placed and may well be a synonym of Tomocerina minuta Tullberg, 1876 (Ma, Chen & Christiansen, 2003:512).

Differential diagnoses

aokii
Corpus of tenaculum with 5 or more setae (fig.a). Dorsum of head without posterior row of macrochaetae (fig.c). Mucro with at least one intermediate tooth (fig.b).

calcea
Corpus of tenaculum with 1 or 2 setae (fig.b). Eyes 6 + fig.. Mucro with at least one intermediate tooth (fig.b). Posterior third of dorsum of the head with 1 or 2 rows of macrochaetae (fig.a, b). Posterior third of dorsum of the head with 2 rows of macrochaetae (fig.b).

curta
Corpus of tenaculum with 1 or 2 setae (fig.b). Eyes 6 + fig.. Mucro with at least one intermediate tooth (fig.b). Posterior third of dorsum of the head without rows of macrochaetae (fig.c). Tenent hair truncate or very weakly clavate.

lamellifera
Corpus of tenaculum with 1 or 2 setae (fig.b). Eyes fig. + 6. Mucro with at least one intermediate tooth (fig.b). Posterior half of dorsum of head with 2 macrochaetae. Posterior third of dorsum of the head without rows of macrochaetae (fig.c). Tenent hair strongly clavate.

liliputana
Corpus of tenaculum with 1 or 2 setae (fig.b). Eyes fig. + 5. Mucro with at least one intermediate tooth (fig.b).

minuta
Corpus of tenaculum with 1 or 2 setae (fig.b). Eyes 6 + fig.. Mucro with at least one intermediate tooth (fig.b). Posterior third of dorsum of the head with 1 or 2 rows of macrochaetae (fig.a, b). Posterior third of dorsum of the head with 1 row of macrochaetae (fig.a).

purpurithora
Corpus of tenaculum with 5 or more setae (fig.a). Dorsum of head with posterior row or rows of macrochaetae (fig.a, b). Mucro with at least one intermediate tooth (fig.b).

teres
Mucro without intermediate teeth (fig.a).

tianshanensis
Corpus of tenaculum with 1 or 2 setae (fig.b). Eyes 6 + 6. Mucro with at least one intermediate tooth (fig.b). Posterior half of dorsum of head with 6 macrochaetae. Posterior third of dorsum of the head without rows of macrochaetae (fig.c). Tenent hair strongly clavate. Trochanteral organ with only a single seta (fig.a).

yiliensis
Corpus of tenaculum with 1 or 2 setae (fig.b). Eyes 6 + 6. Mucro with at least one intermediate tooth (fig.b). Posterior half of dorsum of head with 6 macrochaetae. Posterior third of dorsum of the head without rows of macrochaetae (fig.c). Tenent hair strongly clavate. Trochanteral organ with many setae (fig.b).

References