Prenolepis has true repletes, and a second special sort called lipergates (from Greek, meaning fat workers). If you see a worker with very swollen gaster full of liquid food on the ground with other foragers, that is a true (temporary) replete. The lipergates are recently matured workers who, during fall and the following spring, and cool spells in summer, are fed massive quantities of food, which they convert to body fat. This fat is converted to baby food to feed the late summer brood which includes the huge female alates and a large number of small males. After they lose this weight, the former lipergates become foragers above ground.
Picture by ace ant photographer Alex Wild of Prenolepis alates:
http://www.alexander...pis/i-WnwL4Hn/A
Edited by James C. Trager, January 19 2015 - 8:59 AM.