Abstract
The activity of the hemocytes in relation to growth and molting of the tritonymph of the acarid mite Caloglyphus berlesei Michael has been studied using various histological techniques. The sequence of events leading to migration of the amoebocytcs from the hemocoel to the exuvial space of the mite is described. The amoebocytes that do not migrate and remain in the hemocoel show preferential aggregations at places where histolysis is in progress. In the exuvial space they are mostly attached to the innerside of the old cuticle. It is indicated that the role amoebocytes during molting is twofold: phagocytosis and secretion.

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