Species: Phymateus leprosus
I don’t have a picture of the shiny green and black nymphs of Phymateus leprosus which is said to be an occational pest on citrus trees in the Eastern Cape, South Africa. According to Picker, Griffiths & Weaving* human fatalities from ingestion are known.
Species: Phymateus viridipes
The Green Milkweed locust produce a bad smelling foam from the thoracic joints. One day I found about a hundred nymphs on a milkweed bush (Asclepias physocarpa), and with the help of one Danaus chrisippus caterpillar they consumed the whole bush in a day.
Species: Zonocerus elegans
Species: Zonocerus variegatus
I often find Zonocerus variegatus on Lantana camara, one of the worst alien invader species in our area.
The smaller nymphs are abundant on the notorious Poppom weed Campuloclinium macrocephalum.
* Picker, Griffiths & Weaving. 2004. Field Guide of Insects of South Africa. Struik Nature, Cape Town