POLYMORPHISMS FOR WING LENGTH AND COLOUR PATTERN IN THE GRASSHOPPER PHAULACRIDIUM VITTATUM (SJOST.)

Abstract

An examination of adult Phaulacridium vittatum (Orthoptera: Acrididae) from three geographic regions in south‐eastern Australia showed that in all three populations individuals were dimorphic for both wing length and colour pattern. The frequencies of both polymorphisms differed significantly between different populations but no association between the two polymorphisms was detected. Significant size differences were detected between different morph classes.