hemizonid
From ZooTerms (Dictionary of Invertebrate Zoology)
Secernentea) A nerve commissure from the nerve ring that is highly refractive at the point it joins the ventral nerve cord near the excretory pore
hemizonid (noun; Greek hemisys, half; Latin zona, girdle): (NEMATA:
See also: cephalids, hemizonion, caudalid.