Scaphobaeocea escensa, Löbl, Ivan, 2011

Löbl, Ivan, 2011, On the Scaphisomatini (Coleoptera: Staphylinidae: Scaphidiinae) of the Philippines, II, Revue suisse de Zoologie 118 (4), pp. 695-721 : 704-706

Scaphobaeocea escensa sp. n. Figs 17-19

HOLOTYPE: Ƌ, Mindanao 30 km NW of Maramag, 13-17 May 1996, Bagongsilang, 1700m, Bolm leg. ( SMNS).

PARATYPE: Ƌ, with same data as holotype ( MHNG) .

DESCRIPTION: Length 1.70 mm, width 1.0 mm, dorsoventral diameter 1.08 mm. Head and most of body uniformly very dark brown to blackish, abdomen and appendages reddish-brown. Pronotum lacking microsculpture, elytra with microsculpture FIGS 14-21

(14-16) Scaphobaeocera episternalis sp. n., aedeagus in lateral view, paramere (15) and internal sac (16) enlarged. (17-19) Scaphobaeocera escensa sp. n., antennomeres III to VIII (17), aedeagus in dorsal and lateral views. (20, 21) Scaphobaeocera excisa sp. n., aedeagus in dorsal view (20), paramere in ventral view, enlarged. Scale bars = 0.1 mm.

hardly visible, not iridescent. Punctation extremely fine on pronotum, hypomera and lateral parts of metaventrite. Elytral punctation scattered, punctures much larger those on pronotum. Length ratio of antennomeres (Fig. 17) as: III 4: IV 8: V 12: VI 6: VII 30: VIII 5: IX 26: X 26: XI 26. Segment III comparatively short and wide, about 1.5 times as long as wide. Segment IV slightly narrower than segment III, about twice as long as wide. Segment V hardly wider than segment IV, 3 times as long as wide. Segment VI very short, gradually widened apically, wider than preceding segments, slightly longer than wide. Segment VII conspicuously long, more than 6 times as long as wide. Segment VIII very small, about as wide as segment VII and as wide as long. Segments IX and X similar to segment VII. Segment XI slightly widened apically. Tip of scutelum exposed. Elytra with sutural striae starting at pronotal lobe, parasutural striae present. Hypomeron not microsculptured, lacking longitudinal stria. Middle part of metaventrite flattened, with very short and shallow median stria, impunctate in center, distinctly punctate and with long pubescence laterally and behind center. Mesocoxal lines with very fine marginal punctures not extending laterally along mesepimera; submesocoxal areas about 0.02 mm long. Metepisterna flat, about 0.05 mm wide, parallel-sided, with straight suture. Abdominal ventrite 1 with basal punctures fairly fine, partly elongate. Protibiae straight, meso and metatibiae weakly curved. Ventral side of profemora each with short, arcuate comb situated in level of trochanters.

Male characters. Protarsi with segment 1 to 3 strongly widened. Aedeagus (Figs 18, 19) 0.59-0.62 mm long.

DISTRIBUTION: Philippines: Mindanao.

COMMENTS: The very long antennomere VII, in combination with the small antennomere VIII, is diagnostic for this new species. Scaphobaeocera zdenae Löbl, 1992 has also strongly enlarged antennomere VII, but the antennomere VIII twice as long as wide. Besides, these two species may be easily distinguished by the pronotum and elytra distinctly microsculptured and iridescent in B. zdenae while they are not iridescent in S. escensa .