Scaphisoma ilonggo, 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 : 1358-1359

5.2.4.2. Scaphisoma ilonggo nov.sp. ( Figs 57, 58)

T y p e m a t e r i a l: Holotype 6: Meran, E.slope Mt.Apo, Davao Province, Mindanao, 6000ft; XI: 5: 46 / Lot 100 on polypore 39 Fomes applanatus / CNHM-Philippine Zool.Exped. (1946-47) F.G.Werner leg. (FMNH).

Description: Length 1.25 mm, width 0.82 mm. Head, pronotum and elytra brown. Hypomera, most of abdomen and femora dark reddish-brown, mesoventrite and metaventrite blackish, apex of abdomen, tibiae, tarsi and antennae yellowish. Pronotum and elytra not microsculptured and not iridescent. Length/width ratio of antennomeres as: III 7/5: IV 10/5: V 19/6: VI 25/6: VII 36/11: VIII 19/7: IX 32/12: X 30/13: XI 40/13. Pronotum with lateral margins evenly rounded, lateral margin carinae hardly visible in dorsal view, lateral striae punctate, punctation dense, very fine, hardly visible at 50 times magnification. Exposed tip of scutellum minute. Elytra convex, with lateral margin carinae hardly visible in dorsal view, apical margins oblique, inner apical angles not prominent, situated posterior level of outer angles; sutural margin not raised, sutural striae deep, parallel or slightly converging apically, very finely punctate, bent at base, basal striae absent; adsutural areas narrow, flat, each with single puncture row, lateral striae punctate. Elytral disc with punctation sparse and very fine, almost as fine at that on pronotum, hardly visible at 50 times magnification. Hind wings fully developed. Hypomera smooth, as mesanepisterna and metaventrite without obvious microsculpture. Mesepimera almost as long as intervals to mesocoxae and about three as long as wide. Metaventrite extremely finely punctate. Median part of metaventrite somewhat convex, with shallow apical impressions, lacking stria; antecoxal puncture rows absent. Submesocoxal areas 0.04 mm, almost as third of intervals to metacoxae, submesocoxal lines convex, distinctly punctate. Metanepisternum flat, wide, slightly narrowed anteriad, inner margin almost straight, suture deep. Tibiae straight. Abdomen with punctulate microsculpture, punctation very fine and sparse, hardly visible; submetacoxal areas about 0.03 mm, almost as as halves of intervals to apical margin of sternite, submetacoxal lines convex, with distinct marginal punctures.

M a l e: Protarsomeres 1 to 3 weakly widened. Aedeagus ( Figs 57, 58) 0.55 mm long, symmetrical, moderately sclerotized. Median lobe basal bulb conspicuously long, apical process shorter than basal bulb, narrowed toward tip, obliquely inflexed in apical third, with acute tip in lateral view; articular process indistinct. Parameres wide in basal halves, narrowed and curved in apical halves and acute at tip in dorsal view, almost evenly broad and sinuate in lateral view; lacking lobes. Internal sac with flagellum and subapical vesicle bearing denticular structures.

E t y m o l o g y: The species epithet is one of the Mindanao languages.

C o m p a r a t i v e n o t e s: This species may be readily distinguished from other members of the group by its larger body-size. The parameres seen in dorsal view resemble those in S. nanellum, but are quite distinctive in lateral view. See notes under S. blefusca.