Key to Mandibularia, Parastenostola and Mimocagosima

1 Elytra gradually narrower apically, with a spine at apex; hind femur reaching 4th abdominal segment; male claw appendiculate and female claw simple; tegmen longer than the whole median lobe................... .......................................................................................................................................... Mandibularia Pic

1’ Elytra round or slightly truncated at apex; hind femur reaching 3rd abodominal segment; male and female claws both simple; tegmen shorter than the whole median lobe.................................................................2

2 Scutellum linguaform, width less than twice length; Antenna slender; male genitalia with thin rods longer than tegmen........................................................................................................... Parastenostola Breuning

2’ Scutellum linguaform, width more than twice length; Antenna somewhat stout; male genitalia with rods much shorter than tegmen ..................................................................................... Mimocagosima Breuning