1984] 
Hdlldobler — New exocrine gland 
227 
Fig. 1. Above: Schematical illustration of the Polvergus pygidial gland between 
6th and 7th abdominal tergites. Below: Longitudinal section through the pygidial 
gland of a P. rufescens worker. CS: cup structure; CU: cup; GC: glandular cells; R: 
intersegmental reservoir. 
