part of develops from oviprovector integumentary specialization female genital primordium (female) oviprovector scale 2022-01-21T14:53:29Z FBbt:00052091 fly_anatomy.ontology ovipositor scale Scale-like projection on the surface of the ventral oviprovector membrane (McQueen et al., 2022). These structures may act as ratchets to prevent bidirectional movement of an egg (McQueen et al., 2022).