You searched for: “posterior foramina”
posterior foramen (s), posterior foramina (pl) (nouns)
The opening in an insect's head that goes to the thoracic cavity (part of an insect’s body where its legs and wings are joined): "The entomologist was studying the various posterior foramina of insects to classify the differences between one species and the others."
This entry is located in the following unit: for-, fora- + (page 2)