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Photo#85983
dark speckled springtail - Pogonognathellus flavescens

dark speckled springtail - Pogonognathellus flavescens
Hudson, Hillsborough County, New Hampshire, USA
November 1, 2006
Size: 3 mm or so
Did not measure.

In all, I did a very poor job with this batch of springtails (1, 2, 3, 4, 5, 6) I found near a marsh on a small log partially covered (esp. on bottom) with a layer of dry, brown fungus. For some reason they all died soon after placement in my light arena despite frequent mistings to prevent dehydration. Then, while photographing their tiny corpses I seem to have forgotten to shoot any next to a millimeter rule. Finally, I cannot atest that any of these photos are of the same individual, so I will probably unlink them after posting them with the same set of data.

Moved
Moved from Tomoceridae.

Moved

Pogonognathellus is a (sub)genus
Hi Jim. Lynette was so keen to point this out. In collembola.org we consider Pogonognathellus at genus rank. But some taxonomists treat Pogonognathellus as a subgenus of Tomocerus...
My provisional IDs as Tomocerus must have been confusing... Sorry.
I meant Tomocerus sensu lato.
Anyway, the correct taxon name is Pogonognathellus flavescens, not Tomocerus pogonognathellus flavescens.

 
Fixed.
I don't know how I managed to produce such an error :-)

Moved
Moved from Tomocerus.

Pogonognathellus flavescens
Hi Jim. P. flavescens is normally uniformily leadgrey, silvergrey when all scales are intact. If the scales are removed, the body colour is uniformily yellow, however. Hence, its name 'flavescens'. Another characteristic: its antennae are shorter then its body.
This is a juvenile specimen. Adult P. flavescens are between 4 to 6 mm.
This specimen has suffered the most in this series... I would frass it ;-)

 
Thanks for all the P. flavescens IDs, Frans.
As for this mangled one, I'll hang onto it till we get one with a majority of its scales intact.

Moved

Tomocerus
Note: the third abdominal segment is largest.

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