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Photo#168999
Globular Springtail - Ptenothrix

Globular Springtail - Ptenothrix
Seattle, King County, Washington, USA
February 9, 2008
Size: 2mm

Images of this individual: tag all
Globular Springtail - Ptenothrix Globular Springtail - Ptenothrix Globular Springtail - Ptenothrix Globular Springtail - Ptenothrix Globular Springtail - Ptenothrix Globular Springtail - Ptenothrix

Moved

Interesting specimen
Note the asymmetric dorsal pigmentation: left with spot, right no spot.
This specimen resembles the Ptenothrix Species 2 in many aspects, except in the 'two-colour' pigmentation: anterior dark, posterior pale.
It could be a subspecies of Species 2, else an aberrant specimen.

 
There were 2 specimens
The other was smaller and the photos were much too blurry to be worth using.
I'm kind of wondering if this location could be causing genetic differences. The spot is popular with the springtails because a leaky house gutter constantly drips on the branches of this shrub.
I live near an industrial area and live under the flight path of Seatac International Airport, so that the possibility of pollutants as the reason for all the variability of these creatures has occurred to me. It's only speculation, at this point, though. I will need to test the soil, etc...

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