Fig. 7From: The first fossil salmonfly (Insecta: Plecoptera: Pteronarcyidae), back to the Middle Jurassic Pteroliriope sinitshenkovae tax. et sp. nov. (Middle Jurassic; Daohugou, China), specimen CNU-PLE-NN-2013036; (a), Photograph (negative imprint); (b), Drawing; (c), Detail of head, arrows showing three ocelli, as located on (a)Back to article page