Scaphisoma blefusca

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 : 1357

5.2.4. The Scaphisoma blefusca species group

This group is here established for four new, very similar species, S. blefusca, S. ilonggo, S. liliput and S. nanellum. They share symmetrical aedeagi with robust articular process, subapical ostium and flat flagellum partly surrounded by a vesicle bearing minute denticular or spine-like structures. These species are minute and have in common short antennae, very finely punctate elytra, and lack obvious metaventral and abdominal microsculpture.