Scaphisoma duplex, 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 : 1430-1431

5.2.20.2. Scaphisoma duplex nov.sp. ( Figs 219, 220 )

T y p e m a t e r i a l: Holotype 6: Philippines, Luzon: Lagunas Mt.Banahaw nr school about 1km from Kinabuhayan, 500m, degraded rainforest, 28,XI.1995 [leg. J. Kodada] (MHNG). Paratypes: Luzon, Lagunas Prov., Mt. Makiling 4 km SE Los Banos, 11.IV.1977, leg. L. Watrous, 1 6, 1♀ (MHNG); with same data but 8.IV., 1♀ (MHNG).

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 and with most characters as in S. bilobum. Antennae somewhat shorter, with length/width ratio of antennomeres as: III 10/6: IV 33/5: V 45/7: VI 40/7: VII 48/10: VIII 36/7: IX 46/9: X 45/10: XI 50/10. Inner apical angles of elytra about at level of outer angles, submesocoxal areas 0.03 mm, hardly as fourth of intervals to metacoxae; submesocoxal lines almost parallel; apicomedian area of metaventrite flat; metanepisterna narrowed anteriad; sternite 1 with few coarse basomedian punctures; submetaxocal areas 0.04 mm, about as fourth of intervals to apical margin of sternite. Aedeagus ( Figs 219, 220 ) 0.76 mm long. Median lobe and parameres similar as those in S. bilobum, apical process of median lobe conspicuously widened posterior mid-length and truncate at apex (lateral view).

Ety molo gy: The species epithet is a noun derived from Latin duo (two) and Greek plax (flat), referring to characters shared with S. bilobum.

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.