The intermediate moult (First Ecdysis) of Schistocerca gregaria (Forsk�l) (Insecta, Orthoptera)

Abstract

Ecdysis of the embryonic cuticle has been studied in detail. The initiation and mechanical processes involved in this ecdysis, and the associated differential size increases of cuticular parts have been given most attention. The roles of air swallowing and of thoracic contraction are most imoprtant for rupturing the old cuticle, while abdominal contractions assist the whole process. Some specialized cuticular structures are described.