part of develops from adult abdominal segment 9 abdominal sternite hypandrium male abdominal sternite 9 fly_anatomy.ontology novasternum FBbt:00004847 The male ninth abdominal sternite which extends beneath the phallus. Its posterior ends are dorsally connected to the aedeagal sheath. The hypandrium is composed of the gonocoxite posteriorly, the hypandrial phragma anteriorly and the hypandrial transverse rod in between. phallic sclerite presumptive hypandrium