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Family Isotomidae

Reddish Elongate-bodied Springtail - Isotomurus springtail - Vertagopus arboreus springtail - Vertagopus arboreus springtail - Isotomurus Vertagopus arboreus? - Vertagopus arboreus Springtail ID Request - Isotoma delta Collembola Isotoma delta? Springtail - Isotoma
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Collembola (Springtails and allies)
Order Entomobryomorpha (Elongate-bodied Springtails)
Family Isotomidae
Identification
As a rule of thumb you could use this scheme to distinguish the larger specimens in Isotoma, Isotomurus and Desoria:
Isotoma: macrosetae present on all body segments
Isotomurus: macrosetae only present on posterior body segments
Desoria: macrosetae absent
Internet References
Collembola.org Key to Isotomidae