Scaphisoma scurrile, 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 : 1388-1389

5.2.12.2. Scaphisoma scurrile nov.sp. ( Figs 120-122)

T y p e m a t e r i a l: Holotype 6: Palawan (central) Olangoan, sea level, 18 km NE San Rafael, sea level I. Löbl, 5-6-XII.1995, fungi on large logs, bark (MHNG). Paratypes: Palawan, with the same data as the holotype, 1 6 (MHNG); Palawan, Olanguan [sic], 0-50 m, between Puerto Princesa & Roxas, 1.IX.1985, leg. M. Sakai, 1♀ (EUMJ); Palawan, Matalangao, 150 m, nr. Roxas, 29.VIII.1985, leg. M. Sakai, 1 6 (MHNG); Palawan, Binaluan, 1924, 1 6, 1♀ (SMND, MHNG); Palawan, Binaluan, leg. G. Böttcher, 1♀ (ZMUB).

D e s c r i p t i o n: Length 1.70-1.95 mm, width 1.23-1.45 mm. Head, thorax, elytra and abdomen dark reddish-brown to blackish-brown. Legs reddish-brown, antennae lighter than legs, almost yellowish. Pronotum and elytra not microsculptured and not iridescent. Length/width ratio of antennomeres as: III 14/9: IV 29/7: V 37/9: VI 45/10: VII 54/14: VIII 48/11: IX 60/13: X 60/13: XI 72/14. Pronotum distinctly and densely punctate, with lateral margins evenly rounded, lateral margin carinae not visible in dorsal view, lateral striae finely punctate. Exposed tip of scutellum minute. Elytra convex, with lateral margin carinae hardly visible near base or entirely concealed in dorsal view, apical margins rounded, inner apical angles not prominent, situated in level with outer angles; sutural margin hardly raised, sutural striae deep, bent at base, extended along basal margins to form basal striae basal reaching mid-width or outer third of basal width, parallel posteriad except near apices, very finely punctate; adsutural areas narrow, flat, each with single puncture row, lateral striae punctate. Elytral disc with punctation fairly coarse, dense, coarser than that of pronotum, many punctures about as large as puncture intervals. Hind wings fully developed. Hypomera and mesanepisterna smooth. Mesepimera distinctly shorter than intervals to mesocoxae, hardly three times as long as wide. Metaventrite not microsculptured. Median part of metaventrite weakly convex, without impressions, coarsely punctate on narrow apical area, remainder of metaventrite with extremely fine and sparse punctation; antecoxal puncture rows absent. Submesocoxal areas 0.03-0.04 mm, about as sixth or seventh of intervals to metacoxae, submesocoxal lines parallel, coarsely punctate, punctures not extended by striae. Metanepisternum convex, narrowed anteriad, inner margin rounded, suture deep. Tibiae straight. Abdomen with distinct strigulate microsculpture, very finely and sparsely punctate; submetacoxal areas 0.03-0.04 mm, about as sixth of intervals to apical margin of sternite, submetacoxal lines parallel, coarsely punctate.

M a l e: Protarsomeres 1 to 3 distinctly widened. Aedeagus ( Figs 120-122) 0.73-0.76 mm long, strongly sclerotized. Basal bulb fairly large. Articular processes small, not prominent. Apical process of median lobe longer than basal bulb, split into two asymmetrical valves joined apically, with large dorsal ostium. Ventral valve long, rounded apically in dorsal view, with acute tip in lateral view. Parameres narrow posteriad bases, lacking membranous margins, weakly bent in apical part in dorsal view, appearing straight in lateral view. Internal sac with robust, strongly sclerotized and apically extruded rod, vesiculate proximally; spines and scale-like structures absent.

E t y m o l o g y: The species epithet is a Latin adjective meaning foolish, referring to the unusual shape of the aedeagus.

Comparative notes: The species may be distinguished by the aedeagal characters, in particular by the shape of the broad apex of the median lobe seen in dorsal view and the narrow, almost straight parameres from its congener possessing elytra with basal striae, strigulate abdominal microsculpture and parallel, coarsely punctate submetacoxal lines,