Appearance
The body is yellow with a large violet dorsal patch basally and another one apically. Apart from the nominate form with the two purple patches, there is a var. flavus, in which the dark pigmentation is orange-yellow (resulting in an almost completely evenly yellowish animal) and a var. puncteolus where the patches are speckled.References:
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https://www.collembola.org/taxa/bouridae.htm