The scale-less Entomobryidae are commonly caught in pitfall traps around the planet, and also occur in canopy faunas high up in trees ( notably " Entomobrya nivalis ", very common throughout Europe if not the Northern Hemisphere ).
2.
These tend to be the larger ( > 2 mm ) species, mainly in the genera " Entomobrya " and " Orchesella ", though the densities on a per square meter basis are typically 1 2 orders of magnitude lower than soil populations of the same species.
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