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Photo#85311
yellow globular springtail - Bourletiella arvalis

yellow globular springtail - Bourletiella arvalis
Nashua, Hillsborough County, New Hampshire, USA
October 26, 2006
Size: about 1.2 mm
what a cute look, like a tiny bunny with sad, drooping ears

Images of this individual: tag all
yellow globular springtail - Bourletiella arvalis yellow globular springtail - Bourletiella arvalis yellow globular springtail - Bourletiella arvalis yellow globular springtail - Bourletiella arvalis yellow globular springtail - Bourletiella arvalis yellow globular springtail - Bourletiella arvalis yellow globular springtail - Bourletiella arvalis yellow globular springtail - Bourletiella arvalis

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Sminthurinus hensawi
Hi Jim. I just identified a set of earlier images (that are of less quality than the current images). Christiansen & Bellinger (1998) consider all unpigmented yellowish USA specimens of Sminthurinus (sometimes identified as aureus) as hensawi. This specimen is a very pale one. The small pigment patch on its head between the eyes (distinctly visible in your previous images) is hardly visible here.
BTW, taking a series of shots from different angles is an excellent idea. Well done!

 
Thank you, Frans.
Now if I just had a lens like Tom Murray's :-)

 
Bourletiella arvalis
Hi Jim. I goofed terribly with S. hensawi... Sorry about that. An easy to use character to differentiate between Sminthurinus and Bourletiella is the fourth antennal segment. In Sminthurinus it is not subsegmented. In Bourletiella it is clearly subsegmented. The ratio of the antennal segments 2:3:6:9 corresponds quite well with the description of B. arvalis.

 
Interesting.
I don't often catch my mistakes before someone else does ;-) I'll make the change.

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