Netherlands Journal of Zoology vol:52 issue:1 pages:61-68
The labial gland of workers of the ant Pachycondyla obscuricornis is made up of many acini, each consisting of one central cell surrounded by approximately ten parietal cells. The central cell shows a large amount of secretory vesicles and a well developed granular endoplasmic reticulum. In the parietal cells the amount of secretion appears to be very limited. Both cell types are associated with canaliculi that remove the secretion to the ductule. Invaginated into the central cell is a canaliculus that nearly forms a circular channel with ramifications into each parietal cell.