Larval skins of Vagrant emperor (Anax epipphiger)

A lot has been published in recent weeks about the Vagrant emperor (Anax epipphiger). Reproduction of the species is new to the Netherlands. Today I photographed the Anax larval skins, which I collected in the Millingerwaard on 27-8. All this together with the Blue emperor (Anax imperator) shows the difference in the prementum.