Scaphobaeocera pubiventris, Lobl, 2011

Löbl, Ivan, 2011, On the Scaphisomatini (Coleoptera: Staphylinidae: Scaphidiinae) of the Philippines, II, Revue suisse de Zoologie 118 (4), pp. 695-721 : 714-715

Scaphobaeocera pubiventris sp. n. Figs 39, 40

HOLOTYPE: Ƌ, Luzon, Mountain Prov., N. & NE of Sagada 15-19.XII.1979,

L. Deharveng & J. Orousset #46 ( MHNG).

PARATYPES: 4 Ƌ, 6 ♀ with the same data as the holotype ( MHNG) .

DESCRIPTION: Length 1.25-1.40 mm, width 0.70-0.75 mm, dorsoventral diameter 0.71-0.81 mm. Head and most of body uniformly dark rufous to blackish, apex of abdomen and legs lighter, ochraceous, antennae conspicuously light, yellowish. Pronotum with microsculpture hardly visible, distinctly iridescent in darker specimens, not or barely iridescent in lighter specimens. Elytra microsculptured and iridescent. Pronotal and elytral punctation very fine, irregular, elytra usually with scattered punctures larger than those on pronotum. Length ratio of antennomeres as: III 5: IV 8: V 9: VI 7: VII 12: VIII 7: IX 12: X 12: XI 17. Segment III comparatively short and wide, about twice long as wide. Segments IV to VI about as wide as segment III, segment V 3 times as long as wide. Segment VII about twice as long as wide. Segment VIII about 1.5 times as long as wide. Segments IX and X hardly larger than segment VII. Segment XI not widened apically, about 3 times as long as wide. Tip of scutellum exposed. Elytra with distinct parasutural striae, sutural striae starting at margin of pronotal lobe, slightly curved at base. Hypomeron not microsculptured, with longitudinal stria. Middle part of metaventrite flat, lacking stria or impression. Sides of metaventrite microsculptured, sparsely and finely punctate, with long pubescence. Mesocoxal lines with very fine marginal punctures not extending laterally along mesepimera; submesocoxal areas about 0.02 mm long. Metepisterna flat, with exposed portion about 0.04-0.05 mm wide, almost parallel-sided, with suture slightly curved apically. Abdomen with striate microsculpture, hardly visible on ventrite 1 in some specimens. Abdominal ventrite 1 with basal punctures fairly coarse, partly elongate. Tibiae straight.

Male characters. Protarsi with segments 1 to 3 strongly widened, about as wide as protibiae. Middle part of metaventrite, its anterior fourth excepted, completely covered by a very dense, flat patch of yellowish setae. Aedeagus (Figs 39, 40) 0.55-0.61 mm long.

Female characters. Metaventrite smooth in center, around center densely punctate, with short pubescence.

HABITAT: In rotten wood under a pine.

DISTRIBUTION: Philippines: Luzon.

COMMENTS: This species has the median lobe of the aedeagus similar to that in S. davaoana , S. amicalis Löbl, 2003 , S. tenella Löbl, 1990 and S. uncata Löbl, 1990 . See also comments under S. davaoana . It differs drastically from these species by the much wider flagellum. The pubescence covering completely the middle part of the male metaventrite is diagnostic for this new species.