Abstract
The present review is devoted to the exocrine glands derived from epidermis; glands associated with the preoral cavity (mandibular, salivary, etc) and genital apparatus are not dealt with except for the sake of comparison. As defined, the epidermal glands manifest an exceptional diversity as far as location, morphology, and func tion are concerned. In the past, the studies were mainly anatomical, very rarely cytological, but the interest in insect glands was recently renewed by the chemical approach and the recognized importance of the secretions as far as behavior and physiology are concerned. Concurrently, the high resolution of the transmission electron microscope permitted a far more precise elucidation of the structures, with the hope of establishing some correlations between these structures and the func tions. Additionally, the scanning electron microscope appeared well suited for the examination of some cuticular differentiations.
Published Version
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