[Use of the method of correspondance analysis to study the pigmentation of the Malagasy migratory cricket during its solitary phase in nature].

The elaboration of an original system of codification and the utilization of the correspondance analysis method makes it possible to draw up an identity card, based on promotal pigmentation, for a natural solitary population of the malagasy migratory Locust. The method leads the way to the study of geographical and temporal variations of the pigmentation.