Scaphisoma bolmarum, 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 : 1365-1366

5.2.7.3. Scaphisoma bolmarum nov.sp. ( Figs 74, 75 )

T y p e m a t e r i a l: Holotype 6: Mindanao, Mt. Apo Ilomavis, 1400 m 18.-19. Mai 1996 Bolm lgt. (SMNS).

D e s c r i p t i o n: Length 1.45 mm, width 1.03 mm. Head and most of body blackish, apices of elytra narrowly brown, abdomen dark brown with apical segment ochreous, femora and tibiae ochreous, tarsi and antennae yellowish. Pronotum and elytra not microsculptured and not iridescent. Length/width ratio of antennomeres as: III 11/7: IV 24/5: V 29/6: VI 33/7: VII 40/14: VIII 33/11: IX 40/12: X 42/13: XI 52/13. Pronotum very finely and densely punctate, with lateral margins evenly rounded, lateral margin carinae not visible in dorsal view, lateral striae punctate. Exposed tip of scutellum minute. Elytra convex, with lateral margin carinae exposed in dorsal view, apical margins rounded, inner apical angles not prominent, situated posterior level of outer angles; sutural margin slightly raised posterior basal third, sutural striae deep, somewhat bent at base, not extended along basal margins, parallel along suture except near apices, finely punctate; adsutural areas narrow, flat, each with single puncture row, lateral striae punctate. Most of elytral disc with punctation fine and sparse, distinctly coarser than that of pronotum and with puncture interval about three to four times larger than puncture diameters; punctation on basal third of elytra coarse and dense, with most puncture intervals about as large to twice as large as puncture diameters. Hind wings fully developed. Hypomera and mesanepisterna smooth. Mesepimera about as long as halves of intervals to mesocoxae and about twice as long as wide. Metaventrite not microsculptured, extremely finely punctate. Median part of metaventrite impressed, with apicomedian impressions; antecoxal puncture rows absent. Submesocoxal areas 0.05 mm, almost as third of intervals to metacoxae, submesocoxal lines convex, distinctly punctate. Metanepisternum flat, not narrowed anteriad, inner margin almost straight, suture deep. Tibiae straight. Abdomen with strigulate microsculpture, punctation very fine and sparse, hardly visible; submetacoxal areas 0.04 mm, submetacoxal lines convex, with distinct marginal punctures.

M a l e: Protarsomeres 1 to 3 weakly widened. Aedeagus ( Figs 74, 75 ) 0.47 mm long, symmetrical, fairly strongly sclerotized. Median lobe with ventrally prominent articular process; apical process about as long as basal bulb, strongly inflexed and oblique, except for its bent apical section; tip acute in lateral view, blunt in dorsal view. Parameres straight, narrowed toward middle third, almost evenly narrow from mid-length to apices. Internal sac bearing dense denticulate and spine-like structures, lacking flagellum or sclerotized pieces.

E t y m o l o g y: The species is named in honour of its collectors.

C o m p a r a t i v e n o t e s: The aedeagus characters suggest relationships with S. apomontium and S. hexamerum, see notes under S. apomontium.

Figures

Figs 70 - 75: Aedeagi of Scaphisoma in dorsal and lateral views; (70, 71), S. apomontium nov. sp.; (72, 73) S. binaluanum PIC; (74, 75), S. bolmarum nov. sp. Scale = 0.1 mm.