Scaphisoma lienhardi, 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 : 1445

5.2.22.2. Scaphisoma lienhardi nov.sp. ( Fig. 258 )

T y p e m a t e r i a l: Holotype ♀: Palawan: Roxas Region of Matalangao, 50 m, 5.IV.1983, leg. S. Nagai & C. Lienhard, 83/86 (MHNG).

D e s c r i p t i o n: Length 2.55 mm, width 1.80 mm. Head, pronotum, anterior two thirds of elytra, mesoventrite and metaventrire blackish-brown. Elytra becoming lighter toward apices, in apical fourth ochreous. Hypomera very dark reddish-brown, abdomen and legs dark reddish-brown. Antennae and tarsi lighter, yellowish-brown. Pronotum and elytra not microsculptured and not iridescent. Length/width ratio of antennomeres as: III 17/10: IV 20/10: V 58/15: VI 62/15: VII 65/20: VIII 60/15: IX 63/20: X 60/20: XI 75/20 ( Fig. 258 ). Pronotum finely and densely punctate, punctures well delimited, with lateral contours evenly rounded, lateral margin carinae not visible in dorsal view, lateral striae very finely punctate. Exposed part of scutellum comparatively large. Elytra with lateral margin carinae entirely visible in dorsal view, apical margins rounded, inner apical angles not prominent, situated posterior level of outer angles; sutural margin not raised, sutural striae shallow, bent at base along margin of pronotal lobe and extending laterad to form basal striae reaching basal mid-width, parallel between level of scutellar tip and apex, finely punctate; adsutural areas flat, finely punctate, lateral striae punctate. Elytral disc with punctation similar to that on pronotum on broad basal areas, fairly coarse and dense on prevailing surfaces, with punctures well delimited and most puncture intervals about as large to twice as large as puncture diameters. Hind wings fully developed. Hypomera and mesanepisterna smooth. Mesepimera slightly shorter than intervals to mesocoxae, about twice as long as wide. Metaventrite not microsculptured, flattened in middle, lacking mesal or apicomesal impressions or striae, with punctation very fine and sparse between mesocoxae and on anteriolateral parts, conspicuously coarse and dense on most of mesal surface, between mesocoxae and metacoxae and on apicolateral areas, with punctures sharply delimited and to part larger than puncture intervals; antecoxal puncture rows absent. Submesocoxal 0.07 mm, about as fourth of intervals to metacoxae, submesocoxal lines convex, punctate. Metanepisternum flat, narrowed anteriad, inner suture deep, almost straight except at distinctly rounded angles. Tibiae straight. Mesal part of sternite 1 very densely and fairly coarsely punctate, and with punctulate microsculpture, lateral parts of sternite 1 very finely punctate and not microsculptured. Following sternite very finely punctate and with distinct punctulate microsculpture. Submetacoxal areas 0.04 mm, about as eight of intervals to apical margin of sternite 1, submetacoxal lines parallel, coarsely punctate.

Etymology: The species is named in honour of Charles Lienhard, Geneva, Swizerland, who is one of its collectors.

Comparative notes: This species may be easily distinguished from the Philippine congeners by the following characters in combination: Body 2.55 mm long, blackish-brown, with apical fourth of elytra and abdomen lighter, dark reddish-brown to ochreous. Antennomere IV short, combined with III shorter than V. Elytra with sutural striae curved at bases and extended to form basal striae, reaching about mid-width of basal margin of elytra. Elytral disc with well visible and dense punctation. Metaventrite with conspicuous, coarse and dense punctation covering most of the apicolateral areas, very finely punctate on anterior surfaces. Abdomen with distinct punctulate microsculpture. Submetacoxal lines parallel.

Figures

Figs 256 - 258: Scaphisoma; (256), S. trimaculatum nov. sp., aedeagus in lateral view, scale = 0.3 mm; (257), S. bicolor nov. sp., antennomeres II-XI, scale = 0.1 mm; (258), S. lienhardi nov. sp., antennomeres III-XI, scale = 0.1 mm.