Sex-related morph frequencies in Acrida (F.) (Orthoptera: Acrididae)

Green and brown morphs of the grasshopper Acrida conica (F.) occur sympatrically at several sites in metropolitan Perth, Western Australia. Collections of nymphs from 5 sites and adults from 6 sites showed that the morph frequencies were strongly sex-related in the nymphs, where there were significantly more green females than green males. With adults the proportion of green males increased to near levels found in females.