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

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.

Romuald J. Pomorski, Zoological Institute, Wroclaw University, PL-50-335 Wroclaw, Poland
Javier I. Arbea, Departamento de Biología y Geologéa, IES Alhama, E-31591 Corella, España
Ighor J. Kaprus, State Museum of Natural History of NAS of Ukraine, L'viv 79008, Ukraine
Sophya K. Stebaeva, Institute of Animal Systematics and Ecology, Siberian Division of RAS, Novosibirisk 630091, Russia
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).   Third antennal segment sense organ with 4 papillae.......... 2
        Third antennal segment sense organ with 5 papillae.......... 9
 
2(1).   First thoracic tergum with 4 + 4 setae...................... 3
        First thoracic tergum with 5 + 5 or 6 + 6 setae............. 5
 
3(2).   Postantennal organ with 11 vesicles................. gambiaria
        Postantennal organ with 7-9 vesicles........................ 4
 
4(3).   Subcoxae with 1 pseudocellus; tibiotarsi with distal verticil
          composed of 7 setae; ventral pseudocellar formula
          3/000/0-1112................................ acuitlapanensis
        Subcoxae with 2 pseudocelli; tibiotarsi with distal verticil
          composed of 9 setae; ventral pseudocellar formula
          3/000/0212........................................... calvoi
 
5(2).   First thoracic tergum with 5 + 5 setae...................... 6
        First thoracic tergum with 6 + 6 setae............ sangelensis
 
6(5).   Abdominal sterna with pseudocelli........................... 7
        Abdominal sterna without pseudocelli..................... eisi
 
7(6).   Ventral pseudocellar formula 3/000/xxxx..................... 8
        Ventral pseudocellar formula 3/011/122?........... pseudojusti
 
8(7).   Ventral pseudocellar formula 3/000/1212........... mariapetrae
        Ventral pseudocellar formula 3/000/2222............. fernandae
 
9(1).   First to third abdominal terga with 3 + 3 pseudocelli...... 10
        First to third abdominal terga with 4 + 4 pseudocelli.........
           ............................................. portucalensis
 
10(9).  First thoracic tergum with 1 + 1 pseudocelli; third antennal
          segment sense organ with 5 typical papillae, 2 smooth
          sensory clubs, and 2 typical sensory rods................ 11
        First thoracic tergum with 2 + 2 pseudocelli; third antennal
          segment sense organ with 5 very long, digital papillae,
          covering 2 large, bent and distinctly swollen sensory clubs,
          and 2 small sensory rods, softly bent, hidden under sensory
          clubs............................................... spelaea
 
11(10). Ventral pseudocellar formula 2/000/1212............ naglitschi
        Ventral pseudocellar formula 4/000/2222............... xenonis

Differential diagnoses

acuitlapanensis
First thoracic tergum with 4 + 4 setae. Postantennal organ with 7–9 vesicles. Subcoxae with 1 pseudocellus. Third antennal segment sense organ with 4 papillae. Tibiotarsi with distal verticil composed of 7 setae. Ventral pseudocellar formula 3/000/0–1112.

calvoi
First thoracic tergum with 4 + 4 setae. Postantennal organ with 7–9 vesicles. Subcoxae with 2 pseudocelli. Third antennal segment sense organ with 4 papillae. Tibiotarsi with distal verticil composed of 9 setae. Ventral pseudocellar formula 3/000/0212.

eisi
Abdominal sterna without pseudocelli. First thoracic tergum with 5 + 5 or 6 + 6 setae. First thoracic tergum with 5 + 5 setae. Third antennal segment sense organ with 4 papillae.

fernandae
Abdominal sterna with pseudocelli. First thoracic tergum with 5 + 5 or 6 + 6 setae. First thoracic tergum with 5 + 5 setae. Third antennal segment sense organ with 4 papillae. Ventral pseudocellar formula 3/000/xxxx. Ventral pseudocellar formula 3/000/2222.

gambiaria
First thoracic tergum with 4 + 4 setae. Postantennal organ with 11 vesicles. Third antennal segment sense organ with 4 papillae.

mariapetrae
Abdominal sterna with pseudocelli. First thoracic tergum with 5 + 5 or 6 + 6 setae. First thoracic tergum with 5 + 5 setae. Third antennal segment sense organ with 4 papillae. Ventral pseudocellar formula 3/000/xxxx. Ventral pseudocellar formula 3/000/1212.

naglitschi
First thoracic tergum with 1 + 1 pseudocelli. First to third abdominal terga with 3 + 3 pseudocelli. Third antennal segment sense organ with 5 papillae. Third antennal segment sense organ with 5 typical papillae, 2 smooth sensory clubs, and 2 typical sensory rods. Ventral pseudocellar formula 2/000/1212.

portucalensis
First to third abdominal terga with 4 + 4 pseudocelli. Third antennal segment sense organ with 5 papillae.

pseudojusti
Abdominal sterna with pseudocelli. First thoracic tergum with 5 + 5 or 6 + 6 setae. First thoracic tergum with 5 + 5 setae. Third antennal segment sense organ with 4 papillae. Ventral pseudocellar formula 3/011/122?.

sangelensis
First thoracic tergum with 5 + 5 or 6 + 6 setae. First thoracic tergum with 6 + 6 setae. Third antennal segment sense organ with 4 papillae.

spelaea
First thoracic tergum with 2 + 2 pseudocelli. First to third abdominal terga with 3 + 3 pseudocelli. Third antennal segment sense organ with 5 papillae. Third antennal segment sense organ with 5 very long, digital papillae, covering 2 large, bent and distinctly swollen sensory clubs, and 2 small sensory rods, softly bent, hidden under sensory clubs.

xenonis
First thoracic tergum with 1 + 1 pseudocelli. First to third abdominal terga with 3 + 3 pseudocelli. Third antennal segment sense organ with 5 papillae. Third antennal segment sense organ with 5 typical papillae, 2 smooth sensory clubs, and 2 typical sensory rods. Ventral pseudocellar formula 4/000/2222.


References