UNUSUAL LOCATION AND STRUCTURE OF FEMALE PHEROMONE GLANDS IN THERESIMIMA (EQUALS INO) AMPELOPHAGA BAYLE-BERELLE (LEPIDOPTERA, ZYGAENIDAE)

Morphological and behavioural studies strongly suggest that the sex ph eromone glands of female Theresimima (= Ino) ampelophaga (Lepidoptera: Zygaenidae) are situated on the anterior part of the 3rd - 5th abdomi nal tergites. The glandular epithelium consists of 2 cell types: gland cells and wrapping cells. The gland cells have a central microvilli-l ined cavity which is in contact with the lumen of the hair. These hair s are exposed during the calling behaviour, and the pheromone is proba bly given off via pores in the scale wall. (C) 1997 Elsevier Science L td.