Déplacements saisonniers des Cicadelles, entre savane et forêt galerie, dans la zone des savanes préforestières.

Insects were sampled from March 1968 until September 1969 in the forest savanna mosaic belt of the Ivory Coast, This paper deals more specifically with the species occurring in the boundary between the gallery forest and the savanna. Two sampling techniques were used simultaneously: Moerike's yellow water traps and square metre quadrat cages. 38 species of Jassidae were found of which five constituted 85% of the total numbers. During the rainy period the insects were highly active in their respective habitats, Movements between the forest and savanna were, however, uncommon. During the dry season the insects were largely inactive, and were taken mainly in the quadrat cages. Some migration between the two biotopes took place at this season. [ABSTRACT FROM AUTHOR]