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Collembola - Entomobrya atrocincta - male

Collembola - Entomobrya atrocincta - Male
Norfolk, Virginia, USA
April 12, 2009
Size: ~2.2mm
Entomobrya atrocincta? Male? Found on piece of scrap wood in the leaf litter.

Moved from Entomobrya nr nigrocincta.

For the rationale behind this move, please see the discussion under the image below:


Entomobrya atrocincta, indeed
A male specimen indeed. Or it is a subadult in which the typical black thoracic belt is not yet developed. Or it is an adult male infraspecific colour variant without the typical black belt.

Thanks Frans
The males are quite a bit harder to find, but they stand out with the orange color. Slightly smaller than the females too.

In Collembola...
males are a minority. ;-)
And indeed always smaller than females.
In Symphypleona, sex ratios (f/m) of 10/1 or 100/1 are not unusual. And males are often about half the size of females.

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