STRUCTURE OF THE SALIVARY-GLANDS OF THE UNFED MALE TICK AMBLYOMMA-CAJENNENSE (FABRICIUS) (ACARINA, IXODIDAE)

Acini in the salivary glands of unfed male Amblyomma cajennense of dif ferent ages, were studied The salivary glands consist of one agranular and three granular acini types. The agranular acini are directly atta ched to the medial and anterior portion of the main salivary duct, and to some branches of secondary ducts. A large, clear, central cell occ upies the centre and this cell is in contact with the acinar lumen. Th ere is no valve to the lumen. Granular acini consist of approximately six to fourteen cells (type II acini) or eight to thirteen (type III a cini). The type II acini have three types of granular cells (''a'', '' b'' and ''c'') and a valve; the type III acini have three types of gra nular cells (''d'', ''e'' and ''f'') and a valve.