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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Springtails and allies (Collembola) » Elongate-bodied Springtails (Entomobryomorpha) » Isotomidae » Isotominae » Isotomurus » Isotomurus tricolor
Photo#608682
Collembola - Isotomurus tricolor
Copyright © 2012 Scott Justis

Collembola - Isotomurus tricolor
Norfolk, Virginia, USA
January 14, 2012
Size: ~1.2mm
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Contributed by Scott Justis on 21 January, 2012 - 4:35pm
Last updated 23 January, 2012 - 3:11pm

Moved
Moved from Springtails and allies.
… v belov, 23 January, 2012 - 3:11pm login or register to post comments

Isotomurus tricolor
Quite close, Ken ;-)
Isotomurus, given only macrosetae are present on the last body segments.
Note the straight seta on the 2nd abdominal segment: a bothriotrichum, diagnostic to Isotomurus.
… Frans Janssens, 23 January, 2012 - 2:48pm login or register to post comments

 
Ah...
I thought the bilateral stripes eliminated tricolor, given the ID section of the Info Page.

Still, I'm happy to have hit upon the correct genus. :)
… Ken Wolgemuth, 23 January, 2012 - 4:12pm login or register to post comments

 
I agree it is quite confusing ;-)
Note that the bilateral 'stripes' of tricolor
1. are only present in well pigmented adult specimens
2. are only partly distinct as stripes: only on the abdominal segments, the bilateral pigment is stripe-like. On the thoracic segments the bilateral pigment is absent. Note that the coxae are pigmented, not the thoracic tergum.
In palustris, the bilateral stripes are from thorax to abdomen and distinctly on the terga.
Feel free to add this to the info page.
… Frans Janssens, 25 January, 2012 - 10:46am login or register to post comments

 
Comments added to Info Page
Thanks!
… Ken Wolgemuth, 25 January, 2012 - 2:38pm login or register to post comments

Guessing Isotomurus...
Maybe I. palustris:



I'll be interested to learn if I'm close. :)
… Ken Wolgemuth, 21 January, 2012 - 4:47pm login or register to post comments

 
I Was..
thinking the same, but the markings are different. Maybe an immature?
… Scott Justis, 23 January, 2012 - 7:25am login or register to post comments

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