Five varieties of cynips produce different oak-apples.
"John Keble's Parishes"
Charlotte M Yonge
7. Larva of cynips.
"On the Origin and Metamorphoses of Insects"
Sir John Lubbock
Foreign figs are dried in the oven so as to destroy the larvae of the cynips insect, and are then compressed into small boxes.
"Herbal Simples Approved for Modern Uses of Cure"
William Thomas Fernie