The eggshell morphology of Rallicola unguiculatus Piaget, 1880 (Ischnocera: Phthiraptera)

The egg chorion of the greater coucal louse, Rallicola unguiculatus bears hexagonal ridges. The hat shaped opercular disc also shows hexagonal marks. Twenty to twenty-three button shaped micropyles occur along the opercular rim. The stigma remained obscured under the cementing material.