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1.         Apex of eighth sternite broad, the mesal incision forming 2 wide lobes. . . . . . . . . . . . . . . . . . .             . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Phylocentropus lucidus (Hagen)

            Apex of eighth sternite narrowed and divided inot 2 small lobes. . . . . . . . . . . . . . . . . . . . .                         . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..Phylocentropus placidus (Banks)