http://www.collembola.org/key/entoidea.htm - Last updated on 2017.02.28 by Frans Janssens
Checklist of the Collembola: Key to the families of Entomobryoidea

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.

Felipe N. Soto-Adames, Illinois Natural History Survey, IL 61820, Champaign, USA
Jean-Auguste Barra, Université Louis Pasteur, Laboratoire de Zoologie, F-67000 Strasbourg, France
Kenneth A. Christiansen, Department of Biology, Grinnell College, PO Box V3, Grinnell, IA 50112-0806, USA
Rafael Jordana, Department of Zoology and Ecology, University of Navarra, 31080 Pamplona, Spain
Louis Deharveng, Muséum National d'Histoire Naturelle, 75005 Paris, France
Feng Zhang, Department of Entomology and Key Laboratory of Integrated Management of Crop Diseases and Pests, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
Dan-Dan Sun, Department of Ecology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
Dao-Yuan Yu, Department of Entomology and Key Laboratory of Integrated Management of Crop Diseases and Pests, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
Bei-Xin Wang, Department of Entomology and Key Laboratory of Integrated Management of Crop Diseases and Pests, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
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 absent.................................... Microfalculidae
      Mucro present................................................. 2
 
2(1). Ratio abdominal segments 3/4 at midline less then 1.8......... 3
      Ratio abdominal segments 3/4 at midline more then 2........... 4
 
3(2). Body scales absent................................ Orchesellidae
      Body scales present............................... Heteromuridae
 
4(2). Antennae long................................................. 5
      Antennae short................................... Lepidocyrtidae 2
 
5(4). Tergal S-chaetae 1, 1, 0, 2................................... 6
      Tergal S-chaetae not 1, 1, 0, 2............................... 7
 
6(5). Dens subcylindrical............................... Entomobryidae 4
      Dens tapering.......................................... Seiridae
 
7(5). Tergal S-chaetae 1, 1, 0, 0 or 2, 2, 1, 2......... Entomobryidae
      Tergal S-chaetae 1, 1, 0, 1...................... Lepidocyrtidae 3


Endnotes

1 Soto-Adames et al. 2008 place Lepidosinella in Seirinae because Yoshii indicates that in scale and mucro morphology, and in general body shape Lepidosinella most closely resembles Seira. But according to Yoshii (1989), Lepidosinella lacks ventral dental scales and keys out to Willowsiinae in line with Zhang et al. 2014.

2 Lepidocyrtidae with short antennae (cfr bodyplan).

3 Lepidocyrtidae with long antennae (typically found in cave species).

4 Scaled Paronellinae.


Differential diagnoses

Entomobryidae
Antennae long. Mucro present. Ratio abdominal segments 3/4 at midline more then 2. Tergal S-chaetae not 1, 1, 0, 2. Tergal S-chaetae 1, 1, 0, 0 or 2, 2, 1, 2.

Entomobryidae 4
Antennae long. Dens subcylindrical. Mucro present. Ratio abdominal segments 3/4 at midline more then 2. Tergal S-chaetae 1, 1, 0, 2.

Heteromuridae
Body scales present. Mucro present. Ratio abdominal segments 3/4 at midline less then 1.8.

Lepidocyrtidae 2
Antennae short. Mucro present. Ratio abdominal segments 3/4 at midline more then 2.

Lepidocyrtidae 3
Antennae long. Mucro present. Ratio abdominal segments 3/4 at midline more then 2. Tergal S-chaetae not 1, 1, 0, 2. Tergal S-chaetae 1, 1, 0, 1.

Microfalculidae
Mucro absent.

Orchesellidae
Body scales absent. Mucro present. Ratio abdominal segments 3/4 at midline less then 1.8.

Seiridae
Antennae long. Dens tapering. Mucro present. Ratio abdominal segments 3/4 at midline more then 2. Tergal S-chaetae 1, 1, 0, 2.


References