ovisac
From ZooTerms (Dictionary of Invertebrate Zoology)
ovisac (noun; Latin ovum, egg; saccus, bag): 1. An egg capsule, brood pouch, or receptacle.
2. (Arthropoda: Crustacea) In female Copepoda, the external sac attached to the somite that bears the openings of the gonoducts.
3. (Arthropoda: Insecta) In coccids, the envelope in which eggs are laid; the ovarial cavity in which the eggs are stored.
