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Photo#355613
Collembola - Katiannina macgillivrayi

Collembola - Katiannina macgillivrayi
Norfolk, Virginia, USA
November 26, 2009
Size: ~0.50-1.2mm range
Katiannina macgillivrayi? Found a number of these only on one day under remaining green leaves of young oak trees. Very ornate, and look at those red eyes!
This series is of several different specimens. I managed to get around 100 images of this species.

Frans: I hope you can view the high resolution images :^) This is an incredibly beautiful springtail.

Images of this individual: tag all
Collembola - Katiannina macgillivrayi Collembola - Katiannina macgillivrayi Collembola - Katiannina macgillivrayi Collembola - Katiannina macgillivrayi Collembola - Katiannina macgillivrayi Collembola - Katiannina macgillivrayi Collembola - Katiannina macgillivrayi Collembola - Katiannina macgillivrayi

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Katiannina macgillivrayi
Indeed it is a very beautiful species. And the detail on your pics is breathtaking!
You might want to check the low angle lateral shots in your series of 100 images to see whether or not the small abdomen is in focus. We might then see the raised genital papilla ventrally on the 5th abdominal segment of male specimens or the sub-anal appendage (a higly modified macroseta located ventrally at the 6th abdominal segment and directed towards the 5th abdominal segment) of the katiannid females.

 
One out of focus image..
I took as it was crawling around a leaf. I believe this is a male as I can see what appears to be the raised genital papilla. I cannot be certain which specimen this is though.

Thanks for the kind words and ID confirmation! I had to use 68mm of extension tubes with my MP-E 65mm lens to get good magnification for these tiny buggers. 1.2mm on the larger specimens may have been a little generous! I had to use a magnifying glass just to find them.

 
It is a female.
What you see is actually the female genital opening shaped in the form of a mouth with an anterior and posterior lip. So it is a bit raised indeed but much less distinct than that of the male. The tranvers 'mouth' can be opened to take-up the sperm drop deposited on a stalk by the male.

It is a great shot, Scott! I think it is a scoop on Bugguide ;-)

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