1984] 
Holldobler & Engel-Siegel — Metapleural gland 213 
Fig. 6. The metapleural gland of a worker of Iridomvrmex purpureus a. SEM 
micrograph of mesosoma. The arrow points to the opening of the metapleural gland, 
b. Longitudinal section through the metapleural gland, c. Close-up of a section 
through the glandular cells (GC) and dispenser bristles (B); D = glandular duct; R = 
collecting chamber. 
