Scaphisoma conflictum, 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 : 1418-1419

5.2.19.3. Scaphisoma conflictum nov.sp. ( Figs 184-189 )

T y p e m a t e r i a l: Holotype 6: Philippines: Mt. Makiling, Laguna Prov. 4 km SE Los Banos, 9-IV-1977 / Berlese leaf litter LWatrous (MHNG).

D e s c r i p t i o n: Length 1.35 mm, width 0.83 mm. Head and body dark reddishbrown, elytra becoming lighter near apices, appendages lighter than thorax and most of body. Pronotum and elytra not microsculptured and not iridescent. Length/width ratio of antennomeres as: III 8/6: IV 21/5: V 31/6: VI 28/6: VII 35/10: VIII 25/7: IX 35/10: X 33/11: XI 44/12. Pronotum very finely and densely punctate, with lateral contours rounded, lateral margin carinae visible in dorsal view, lateral striae punctate. Exposed tip of scutellum small. Elytra not flattened, with lateral margin carinae exposed in dorsal view, apical margins slightly rounded, inner apical angles not prominent, situated somewhat posterior level of outer angles; sutural margin not raised, sutural striae shallow, bent at base, not extended along basal margins, parallel posteriad to apical third, converging toward apices, fairly coarsely punctate; adsutural areas narrow, flat, each with single puncture row, lateral striae punctate. Prevailing surface of elytral disc with punctation coarse and dense, puncture intervals mostly twice to three times as large as puncture diameters. Hind wings fully developed. Hypomera and mesanepisterna smooth. Mesepimera almost twice as long as intervals to mesocoxae, about four times as long as wide. Metaventrite not microsculptured, between mesocoxae weakly convex and very finely punctate, in median part flattened posteriad and densely, fairly coarsely punctate, lacking impressions or stria. Lateral parts of metaventrite very finely and sparsely punctate, with antecoxal rows of coarse punctures. Submesocoxal areas 0.04 mm, about as third of intervals to metacoxae, submesocoxal lines convex, coarsely punctate. Metanepisternum flat, narrowed anteriad, inner margin rounded, impressed below margin of metaventrite. Tibiae straight. Abdomen not microsculptured, very finely punctate; sternite1 with submetacoxal areas 0.07 mm, slightly shorter than intervals to apical margin, submetacoxal lines convex, coarsely punctate.

M a l e: Protarsomeres 1 to 3 slightly widened. Aedeagus ( Figs 184-189 ) 0.55 mm long, moderately sclerotized. Apical process of median lobe trifid, much shorter than basal bulb, asymmetrically bent to left (dorsal view), inflexed ventrally; dorsal branches distinct, reaching level of tip of ventral branch in dorsal view, ventral branch oblique, with acute tip. Parameres in dorsal view narrowed posterior mid-length, slightly widened in middle part in lateral view. Internal sac complex, with apical sclerotized teeth, lateral row if spines, and squamous and denticular structures.

E t y m o l o g y: The species epithet is a Latin adjective meaning conflicting. Comparative notes: This species differs conspicuously of other members of the S. haemorrhoidale group by the abdomen lacking strigulate microsculpture. It is also unambiguously defined by the shape of the short, asymmetrical apical process of the median lobe.

Figures

Figs 184 - 193: Aedeagi of Scaphisoma; (184, 185), S. conflictum nov. sp., in dorsal and lateral views, scale = 0.2 mm; (186), ditto, apical part of median lobe, in dorsal view, scale = 0.1 mm; (187, 188), ditto, internal sac in dorsal and ventral views, scale = 0.1 mm; (189), ditto, paramere in ventral view, scale = 0, 1 mm; (190, 191), S. confusum nov. sp., in dorsal and lateral views, scale = 0.2 mm; (192), ditto, parameres in lateral view, scale 0, 1 mm; (193), ditto, internal sac in dorsal view, scale = 0.1 mm.