5.2.5. The Scaphisoma lineare species group

This group is established for a single new species, S. lineare, that possesses following characters in combination: the elytra lacking basal striae, the thorax and abdomen lacking microsculpture, the apical process of the median lobe strongly shortened with apical ostium, the parameres bearing large lobes, the internal sac bearing robust sclerites, denticles and a flagellum.