pupa (plural form: pupae) is an in-game item of They are the third and final stage of ant development. and will have to be placed in an appropriate spot (wet dirt), otherwise, they will spoil and disappear.

It's part of the development stage for a new ant. They are preceded by larva, and succeeded by the hatching of the ant.
Ant Development
BroodEggBroodBrood (1)LarvaBrood (1)Brood (2)PupaBrood (2)
WorkerWorker AntWorkerSoldierSoldier AntSoldierSoldierSupermajor AntSoldier

QueenQueen AntQueen

Predators (Hostile)
SpiderBlack WidowSpiderSpider2Wolf SpiderSpider2Centipede (3)CentipedeCentipede (3)

Prey (Passive)
AnateAnateAnateGoliath beetleGoliath BeetleGoliath beetle
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