Scaphisoma nishikawai, Ivan Löbl & Ryo Ogawa, 2016

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 : 1431

5.2.20.3. Scaphisoma nishikawai nov.sp. ( Figs 221-223 )

T y p e m a t e r i a l: Holotype 6: Mindanao Kraan, Sultan Kadarat Prov. 12.VIII.1985 Y. Nishikawa leg. (EUMJ).

D e s c r i p t i o n: Length 1.72 mm, width 1.20 mm. Head and body ochreous, apical abdominal segments and appendages lighter than most of body. Very similar to S. bilobum and S. duplex, body somewhat lighter. Elytra with distinctly converging and punctate sutural striae; discal punctation fairly fine and dense, with most puncture intervals larger than puncture diameters. Mesepimera shorter, slightly longer than intervals to mesocoxae. Metaventrite with deep median impression, strigulate microsculpture on area between mesocoxae and metacoxae. Submesocoxal areas 0.03 mm, about as fifth of intervals to metacoxae. Metanepisternum narrowed anteriad. Sternite 1 with row of coarse basomedian punctures; submetacoxal areas about as third of interval to apical margin. Aedeagus ( Figs 221-223 ) 1.02 mm long, similar to that of S. bilobum but apical process of median lobe conspicuously narrowed toward mid-length in dorsal view, oblique and at tip widened in lateral view. Internal sac with robust tooth pointed obliquely dorsally, lacking group teeth in apical section.

E t y m o l o g y: The species is dedicated to its collector, Yoshiaki Nishikawa, from the Otemon Gakuin University, Osaka, Japan.

C o m p a r a t i v e n o t e s: The species has a unique shape of the apical process of the median lobe and thus may be easily distinguished by its aedeagal characters.

Figures

Figs 219 - 223: Aedeagi of Scaphisoma in dorsal and lateral views; (219, 220), S. duplex nov. sp., scale = 0.2 mm; (221, 222), S. nishikawai nov. sp., scale = 0.2 mm; (223), ditto, apical process of median lobe in lateral view, scale = 0.1 mm.