- Last updated on 2001.09.05 by Frans Janssens
Checklist of the Collembola: Introduction to the Collembola: slide 2 of 13

Fig.2. Ceratophysella bengtssoni. Hopkin, S.P. © 1999.
Collembola are abundant
Collembola are probably the most abundant hexapods on Earth, with up to 250,000,000 individuals per square acre. They are found in soil, leaf litter, logs, dung, cave, shorelines, etc.
'Swarm' of Ceratophysella bengtssoni (Ågren, 1904) on the surface of a puddle of water (Collembola: Hypogastruridae). The largest specimen is 2 mm in length. Hypogastrurids are often found in huge aggregations numbering many millions.