Laboratory studies on the locomotor activity of Coryphosima stenoptera and other West African Acrididae (Insecta: Orthoptera)


  • *Department of Zoology, University of Newcastle upon Tyne.


The activity of nymphs and adults of C. stenoptera (Schaum) and some other Acrididae was tested in an actograph. Sexually mature females were more active than immature; males were intermediate in activity, while nymphs, females with eggs in the oviducts and those in a condition of reproductive inactivity were least active. There was evidence that the activity of females increases with age, and that individuals differ in the mean level of activity. There appears to be little possibility at present of relating these changes to the neurosecretory and endocrine systems.