Scaphisoma aequatum

Ivan Löbl & Ryo Ogawa, 2016, On the Scaphisomatini (Coleoptera, Staphylinidae, Scaphidiinae) of the Philippines, IV: the genera Sapitia ACHARD and Scaphisoma LEACH, Linzer biologische Beiträge 48 (2), pp. 1339-1492 : 1356

5.2.3. The Scaphisoma aequatum species group

This group is here established for four Melanesian species, S. aequatum LÖBL, 1977, S. distans LÖBL, 1977, S. tannaense LÖBL, 1978 and S. zimmermanni LÖBL, 1977, and the new Philippine S. diversum described below (see LÖBL 1977b, 1978b). These species have symmetrical aedeagi with long, narrow parameres each bearing a small apical membranous lobe. The internal sac is simple, with a flagellum. The New Guinean S. dissimile LÖBL, 1975 and S. papuum (LÖBL, 1975) and the Mascarene S. gomyi Löbl, 1977 possesse similar aedeagi but differs drastically in other characters.