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Species Hydroisotoma schaefferi

springtail - Hydroisotoma schaefferi - male springtail - Hydroisotoma schaefferi - male springtail - Hydroisotoma schaefferi springtail - Hydroisotoma schaefferi springtail - Hydroisotoma schaefferi Collembola - Hydroisotoma schaefferi podura aquatica? - Hydroisotoma schaefferi springtail - Hydroisotoma schaefferi - male
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Collembola (Springtails and allies)
Order Entomobryomorpha (Elongate-bodied Springtails)
Family Isotomidae
Subfamily Isotominae
Genus Hydroisotoma
Species schaefferi (Hydroisotoma schaefferi)
Explanation of Names
Author: Krausbauer, 1898
Range
Nearctic, very common in Europe, introduced.
Remarks
Species has sexual dimorphism (quite rare in entomobryomorph Collembola): thickening of the outer side of the 2nd antennal segments is typical of males of this species.
This species is adapted to live on the water surface: note the hypognath head (with mouth opening directed downwards to the watersurface), typical for water surface film dwellers (see also Podura aquatica). Note also the broad dentes which prevent piercing the water surface film when the specimen needs to jump. Comments by Frans Janssens.
Internet References