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Arthropods (Arthropoda)
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Hexapods (Hexapoda)
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Springtails and allies (Collembola)
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Globular Springtails (Symphypleona)
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Katiannoidea
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Katiannidae
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Sminthurinus
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Sminthurinus quadrimaculatus
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forma bipunctatus (Sminthurinus quadrimaculatus forma bipunctatus)
Photo#168786
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:
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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
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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
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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
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Moved
Moved from
Sminthurinus quadrimaculatus
.
Please see remarks on the
Info page
.
…
Harsi S. Parker
, 17 July, 2009 - 11:58am
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Moved
Moved from
Globular Springtails
.
…
Joyce Gross
, 9 February, 2008 - 10:20am
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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
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thanks Frans
Lots of variation in this species! Thanks for explaining the white spots.
…
Joyce Gross
, 9 February, 2008 - 10:20am
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