Our field studies on two species of the African family Pyrgomorphidae, Zonocerus elegans and Phymateus leprosus, revealed pharmacophagy as the basis for their conspicuous colouration that acts as warning device to predators. We obtained morphological data in Zonocerus elegans and related them to the mating behaviour. Both species form social aggregations, Z. elegans when egg laying, P. leprosus in the hopper stages.
Morphology and mating Morphologie und Paarungsverhalten	Pharmacophagy Fressen von chemischen Stoffen	Egg deposition Ei-Ablage
Zonocerus elegans pair in copula © Seibt & Wickler	Phymateus leprosus pair in mate-guarding position       © Seibt & Wickler