[1] These beetles are elongated and flattened in shape, measuring under one centimeter in length.
Their flattened shape makes them distinct from related genera and might be an adaptation for living between densely arranged leaves on plants.
They are usually black in color, but some species are coppery brown or occasionally blue.
[1] The larvae of S. tasmanica have been observed tunneling into the stems of sedges (genus Gahnia).
They then "pack their bright yellow frass into the central hollow portion" of the stems and pupate there.