Fig. 1From: Neurons of self-defence: neuronal innervation of the exocrine defence glands in stick insectsDefence glands in Peruphasma schultei. Paired defence glands (dg) in the dorsal prothorax extend into the mesothorax, indicated by the forewing pads (white arrow heads). Glands are exposed in an adult male individuum prior to tracing experiments. Scale bar: 1Â mmBack to article page