Fig. 3

Scanning electron microscopy (SEM) of general morphology of Pemphigus populiglobuli secondary generation detected in Svalbard A Waxed specimen of the summer population. B ‘Dewaxed’ specimen of the hibernating population. C Dorsal side of the head, prothorax and mesothorax of ‘dewaxed’ specimen of the hibernating population. D Dorsal side of the head of waxed specimen of the summer population. E Triommatidium of ‘dewaxed’ specimen of the summer population. F Dorsal side of the head, prothorax and mesothorax of waxed specimen of the summer population; wingless viviparous females all collected in Longyearbyen