occiput
From ZooTerms (Dictionary of Invertebrate Zoology)
occiput (noun; Latin occiput, back of the head): (Arthropoda: Insecta) 1. The dorsal posterior part of the cranium, between the occipital and postoccipital sutures; in many the boundaries with the vertex and postgenae are not delimited. 2. In Formicidae, the short region between the vertex and the neck.
