252 
Psyche 
[Vol. 88 
Fig. 5. Above: SEM pictures of the gaster tip of a media of Orectognathus 
versicolor. The slightly extruded stinger is visible. It is surrounded by long sensory 
setae (confirmed by histology; probably mechanoreceptors) on the edge of the 
pygidium and 7th sternum. 
Below: Groved cuticular structures on the pygidium associated with the pygidial 
gland. This structure is usually covered by the preceding 6th tergite. 
