part of continuous with sclerite prothoracic sternum furcasternum Only seems to be present in prothoracic segment according to Ferris (1950), despite sternal apophyses in all segments (according to Miller, 1950 - FBrf0186027). FBbt:00004570 Sclerite of the ventral adult prothorax that is located over the midline and surrounds the opening into the prothoracic sternal apodeme (Ferris, 1950). It is between the prothoracic and mesothoracic preepisternum regions (Ferris, 1950). fly_anatomy.ontology prothoracic furcasternum furcasternum 1 prothoracic sternal apodeme