Scaphobaeocera excisa, Lobl, 2011

Löbl, Ivan, 2011, On the Scaphisomatini (Coleoptera: Staphylinidae: Scaphidiinae) of the Philippines, II, Revue suisse de Zoologie 118 (4), pp. 695-721 : 706-707

Scaphobaeocera excisa sp. n. Figs 20-23

HOLOTYPE: Ƌ, Luzon, Baguio, Mt. Santo Thomas , ca 1850m, 14.I.1980, L. Deharveng & J. Orousset leg. # 191 ( MHNG).

PARATYPES: 3 Ƌ, with same data as the holotype; 2 Ƌ, Luzon, Baguio, Mt. Santo Thomas , ca 2150m, 14.I.1980, L. Deharveng & J. Orousset leg. #198 (all MHNG) .

DESCRIPTION: Length 0.95-1.05 mm, width 0.60-0.63 mm, dorsoventral diameter 0.54-0.55 mm. Head and body ochraceous to blackish, appendages lighter. Thorax and elytra lacking microsculpture, not iridescent. Pronotal and elytral punctation very fine, dense, visible at magnification 32x. Length ratio of antennomeres as: III 6: IV 6: V 6: VI 6: VII 10: VIII 5: IX 9: X 9: XI 13. Segments III and IV similar, very narrow, each about 4 times as long as wide. Segments V and VI slightly wider than segment IV. Segment VII about 2.5 times as long as wide. Segment VIII about 1.3 times as long as wide. Segments IX and X hardly wider than segment VII. Segment XI not widened apically, almost 3 times as long as wide. Tip of scutellum exposed. Elytra without parasutural striae, sutural striae curved at base and extending along basal margin to form short basal striae, ending in inner halves of basal elytral width. Hypomeron not microsculptured, lacking longitudinal stria. Middle part of metaventrite flat, lacking stria or impression, coarsely and densely punctate, with short pubescence. Sides of metaventrite lacking microsculpture, sparsely, extremely finely punctate, with long pubescence. Mesocoxal lines with coarse marginal punctures extending laterally along mesepimera; submesocoxal areas about 0.03 mm long. Metepisterna slightly convex, exposed portion about 0.05 mm wide, with arcuate suture. Abdomen with hardly visible punctulate microsculpture. Abdominal punctation fine, except comparatively distinct punctation on propygidium. Basal punctures of ventrite 1 partly elongate and coarse. Tibiae straight.

Male characters. Protarsi with segments 1 to 3 slightly widened, much narrower than protibiae. Aedeagus (Figs 20-23) 0.35-0.38 mm long.

HABITAT: Moist ravine, in forest litter.

DISTRIBUTION: Philippines: Luzon.

COMMENTS: The elytra with extended sutural striae and the shape of the parameres are diagnostic for this species. Scaphobaeocera incisa Löbl, 1990 has also emarginate parameres, but the emargination is subapical. Besides, it differs conspicuously in other aedeagal characters.