These large, spiny insects with their long antennae are very impressive! The males and females look quite different. The females, which can reach 16 cm in length and weigh up to 50 g, are armed with several spines of different lengths. While the females are generally leaf green, the males are brownish. The males are about 9 cm long and have large purple wings enabling them to fly short distances.
Their name comes from the fact that the females’ brachypterous wings make them look like nymphs.