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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Springtails and allies (Collembola) » Globular Springtails (Symphypleona) » Sminthuroidea » Bourletiellidae » Pseudobourletiella » Pseudobourletiella spinata
Photo#103899
Globular Springtail - Pseudobourletiella spinata
Copyright © 2007 Claude Pilon

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.

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Globular Springtail - Pseudobourletiella spinata Globular Springtail - Pseudobourletiella spinata
Contributed by Claude Pilon on 18 April, 2007 - 8:22am

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
… Frans Janssens, 18 April, 2007 - 9:03am

 
Insect
Oh yes! And BugGuide taxonomic tree shows it.
Thanks for the clarification. :)
… Claude Pilon, 18 April, 2007 - 9:49am

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