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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Springtails and allies (Collembola) » Elongate-bodied Springtails (Entomobryomorpha) » Entomobryoidea » Slender Springtails (Entomobryidae) » Entomobryinae » Entomobrya » Entomobrya atrocincta
Photo#266159
Collembola - Entomobrya atrocincta - male
Copyright © 2009 Scott Justis

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.
tag · login or register to post comments
Contributed by Scott Justis on 14 April, 2009 - 11:24pm
Last updated 2 February, 2016 - 7:13pm

Moved
Moved from Entomobrya nr nigrocincta.

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

… Ken Wolgemuth, 2 February, 2016 - 7:13pm login or register to post comments

Moved
Moved from Springtails and allies.
… Scott Justis, 15 April, 2009 - 8:48am login or register to post comments

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.
… Frans Janssens, 15 April, 2009 - 1:27am login or register to post comments

 
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.
… Scott Justis, 15 April, 2009 - 8:50am login or register to post comments

 
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.
… Frans Janssens, 16 April, 2009 - 12:38am login or register to post comments

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