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1.         Last tarsal segment distinctly longer than the other four combined, the last segment usually             suddenly dilated beyond the middle; tarsal claws relatively robust. . . . . . . . . S. villipennis

            Last tarsal segment not distintinctly longer than the other four combined, the last segment             not as noticeably dilated; tarsal claws relative slender. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.         Each elytron with 3 longitudinal vittae; 3.2-3.6 mm long, 1.25-1.4 mm wide. . . . . . . . . . . . .               . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S. sexlineata

            Each elytron with no more than one vitta or elytron bimaculate. Humeral spot or vitta on             inside of sixth interval. Body very robust, and with the elytral spots or stripe wider, covering             considerably more than the 5th interval; third interval sharply elevated at base; elytron with             entire vitta or bimaculate; 3.9-3.35 mm long, 1.2-1.35 mm wide. . . . . . . . . . . S. crenata

           

           

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