1	5th dorsal elytral stria complete	2
–	5th dorsal stria abbreviated from base	Operclipygus simplistrius sp. n.
2	5th dorsal and sutural elytral striae united in basal arch	3
–	5th dorsal and sutural elytral striae free anteriorly	Operclipygus schmidti sp. n.
3	Anterior pronotal margin strongly elevated behind head; supraorbital stria interrupted at middle; inner subhumeral stria present in apical half	Operclipygus lucanoides sp. n.
–	Anterior pronotal margin weakly elevated behind head; supraorbital stria complete; inner subhumeral stria absent	Operclipygus sulcistrius Marseul