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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Springtails and allies (Collembola) » Globular Springtails (Symphypleona) » Katiannoidea » Katiannidae » Sminthurinus » Sminthurinus quadrimaculatus » forma bipunctatus (Sminthurinus quadrimaculatus forma bipunctatus)
Photo#168786
springtail - Sminthurinus quadrimaculatus
Copyright © 2008 Joyce Gross

springtail - Sminthurinus quadrimaculatus
Anthony Chabot Regional Park, Castro Valley, Alameda County, California, USA
February 7, 2008
Size: <1mm
Came from a polypore fungus on a coast live oak.

The white marks on its sides look like holes -- but I guess it's the coloration?

Images of this individual: tag all
springtail - Sminthurinus quadrimaculatus springtail - Sminthurinus quadrimaculatus springtail - Sminthurinus quadrimaculatus
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Contributed by Joyce Gross on 8 February, 2008 - 6:45pm
Last updated 13 December, 2010 - 10:16pm

Moved
Moved from forma bimaculatus.
… Charley Eiseman, 13 December, 2010 - 10:16pm login or register to post comments

 
Thank you for creating a new page, Charley...
This task was actually on a seriously old "to do" list of mine and I think I just completely forgot about it. Thanks for following through!
… Harsi S. Parker, 13 December, 2010 - 10:38pm login or register to post comments

Sminthurinus quadrimaculatus forma bipunctatus
The recent introduction of the forma bimaculatus page at BugGuide by Harsi Parker was a nice opportunity for me to look again over all the availmble pictures.
It turns out that your specimen is not forma bimaculatus but a different colour form called bipunctatus.
The difference between the two colour forms:
in bimaculatus, 2 separate white 'eyebrows' are distinctly visible
in bipunctatus, the white eyebrows are interconnected forming a kind of white forehead.
… Frans Janssens, 18 July, 2009 - 2:11am login or register to post comments

Moved
Moved from Sminthurinus quadrimaculatus.

Please see remarks on the Info page.
… Harsi S. Parker, 17 July, 2009 - 11:58am login or register to post comments

Moved
Moved from Globular Springtails.
… Joyce Gross, 9 February, 2008 - 10:20am login or register to post comments

Sminthurinus quadrimaculatus
forma bimaculatus.
Typically, this species has 4 white spots on its body. This form with just 2 spots is rare.
The white 'spots' on the body are in fact small elevations of the skin.
Great pictures, Joyce!
… Frans Janssens, 9 February, 2008 - 4:22am login or register to post comments

 
thanks Frans
Lots of variation in this species! Thanks for explaining the white spots.
… Joyce Gross, 9 February, 2008 - 10:20am login or register to post comments

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