http://www.collembola.org/key/lathriop.htm - Last updated on 2017.10.31 by Frans Janssens
Checklist of the Collembola: Key to the species of Lathriopyga

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.

Galina Busmachiu, Institute of Zoology, Academy of Sciences of Moldova, 2028 Chisinau, Republic of Moldova
Louis Deharveng, Muséum National d'Histoire Naturelle, 75005 Paris, France
Wanda M. Weiner, Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Pl-31016 Kraków, Poland
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). De tubercles fused on first thoracic segment.................. 2
      De tubercles separate on first thoracic segment............... 3
 
2(1). Oca absent; on fifth abdominal segment Di2 as microchaeta; on
        fifth abdominal segment Di3 absent.................. bulgarica
      Oca as microchaeta; on fifth abdominal segment Di2 as short
        macrochaetae; on fifth abdominal segment Di3 as short
        macrochaetae........................................... nistru
 
3(1). Di fused axially on fourth abdominal segment.................. 4
      Di separate on fourth abdominal segment................. montana
 
4(3). Chaetotaxy of lateral tubercles at least 3, 3/3, 3, 4, 5 from
        second thoracic segment to fourth abdominal segment......... 5
      Chaetotaxy of lateral tubercles very reduced 2, 2/1, 1, 1, 1
        from second thoracic segment to fourth abdominal segment......
         ............................................... krizevacensis
 
5(4). Body colour blue or dark blue; ocelli 2 + 2 conspicuous....... 6
      Body colour white; ocelli inconspicuous or absent..... belisaria
 
6(5). Dl on head with 3 chaetae; dorsal macrochaetae very thick, bent,
        cylindrical........................................... willemi
      Dl on head with 6 chaetae; dorsal macrochaeta thickened,
        subcylindrical to fusiform.................................. 7
 
7(6). Granular areas on Af tubercle of head absent.......... hellenica
      Granular areas on Af tubercle of head four.................... 8
 
8(7). Mandible tridentate................................. microchaeta
      Mandible with at least five teeth............................. 9
 
9(8). Maxilla made of several lamellae, including one tridentate
        apically and one ciliated.......................... primigenia
      Maxilla styliform..................................... longiseta

Differential diagnoses

belisaria
Di fused axially on fourth abdominal segment. De tubercles separate on first thoracic segment. Body colour white. Chaetotaxy of lateral tubercles at least 3, 3/3, 3, 4, 5 from second thoracic segment to fourth abdominal segment. Ocelli inconspicuous or absent.

bulgarica
De tubercles fused on first thoracic segment. Oca absent. On fifth abdominal segment Di2 as microchaeta. On fifth abdominal segment Di3 absent.

hellenica
Di fused axially on fourth abdominal segment. De tubercles separate on first thoracic segment. Dl on head with 6 chaetae. Body colour blue or dark blue. Chaetotaxy of lateral tubercles at least 3, 3/3, 3, 4, 5 from second thoracic segment to fourth abdominal segment. Dorsal macrochaeta thickened, subcylindrical to fusiform. Granular areas on Af tubercle of head absent. Ocelli 2 + 2 conspicuous.

krizevacensis
Di fused axially on fourth abdominal segment. De tubercles separate on first thoracic segment. Chaetotaxy of lateral tubercles very reduced 2, 2/1, 1, 1, 1 from second thoracic segment to fourth abdominal segment.

longiseta
Di fused axially on fourth abdominal segment. De tubercles separate on first thoracic segment. Dl on head with 6 chaetae. Body colour blue or dark blue. Chaetotaxy of lateral tubercles at least 3, 3/3, 3, 4, 5 from second thoracic segment to fourth abdominal segment. Dorsal macrochaeta thickened, subcylindrical to fusiform. Granular areas on Af tubercle of head four. Mandible with at least five teeth. Maxilla styliform. Ocelli 2 + 2 conspicuous.

microchaeta
Di fused axially on fourth abdominal segment. De tubercles separate on first thoracic segment. Dl on head with 6 chaetae. Body colour blue or dark blue. Chaetotaxy of lateral tubercles at least 3, 3/3, 3, 4, 5 from second thoracic segment to fourth abdominal segment. Dorsal macrochaeta thickened, subcylindrical to fusiform. Granular areas on Af tubercle of head four. Mandible tridentate. Ocelli 2 + 2 conspicuous.

montana
Di separate on fourth abdominal segment. De tubercles separate on first thoracic segment.

nistru
De tubercles fused on first thoracic segment. Oca as microchaeta. On fifth abdominal segment Di2 as short macrochaetae. On fifth abdominal segment Di3 as short macrochaetae.

primigenia
Di fused axially on fourth abdominal segment. De tubercles separate on first thoracic segment. Dl on head with 6 chaetae. Body colour blue or dark blue. Chaetotaxy of lateral tubercles at least 3, 3/3, 3, 4, 5 from second thoracic segment to fourth abdominal segment. Dorsal macrochaeta thickened, subcylindrical to fusiform. Granular areas on Af tubercle of head four. Mandible with at least five teeth. Maxilla made of several lamellae, including one tridentate apically and one ciliated. Ocelli 2 + 2 conspicuous.

willemi
Di fused axially on fourth abdominal segment. De tubercles separate on first thoracic segment. Dl on head with 3 chaetae. Body colour blue or dark blue. Chaetotaxy of lateral tubercles at least 3, 3/3, 3, 4, 5 from second thoracic segment to fourth abdominal segment. Dorsal macrochaetae very thick, bent, cylindrical. Ocelli 2 + 2 conspicuous.


References