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TaxonomyBrowseInfoImagesLinksBooksData
Photo#103899
Globular Springtail - Pseudobourletiella spinata

Globular Springtail - Pseudobourletiella spinata
Montreal, Quebec, Canada
September 6, 2006
Under the insect, between the first and second leg, one can see the paddlelike mucrones. See explanation from Frans Janssens here.

Images of this individual: tag all
Globular Springtail - Pseudobourletiella spinata Globular Springtail - Pseudobourletiella spinata

Great!
BTW, never call a springtail an insect... ;-)
Collembola are a dedicated class of hexapods on its own, with the same rank as Insecta. Phylogenetically they both are descendants from different ancestral crustaceans. So they do not have a direct common ancestor. Collembola are assumed to be more ancient then Insecta.
Some researchers believe that Collembola are the very first kind of terrestrial Crustacea:
http://www.collembola.org/publicat/crustacn.htm

 
Insect
Oh yes! And BugGuide taxonomic tree shows it.
Thanks for the clarification. :)

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