epicranium

The epicranium bears most of the main sensory organs, including the antennae, ocelli, and the compound eyes.

That portion of the epicranium which lies immediately behind the frons and between the compound eyes is termed the vertex.

They take their origin from the prothorax and cervix and are inserted into the tentorium and epicranium.

The head in most insects is enclosed in a hard, heavily sclerotized, exoskeletal head capsule, or epicranium.

The occiput is the hinder part of the epicranium between the vertex and the neck; it is rarely present as a distinct sclerite.

The dorsal abductors which originate on the upper lateral part of the epicranium and insert each on an apodeme connected with the outer, basal region of the mandible.

The epicranium is the upper region of the head from the frons to the neck and may be divided longitudinally into two epicranial plates by the ecdysial cleavage line or median sulcus.