Baeocera beata, Lobl, 2015

Löbl, Ivan, 2015, On the Scaphidiinae (Coleoptera: Staphylinidae) of the Lesser Sunda Islands, Revue suisse de Zoologie 122 (1), pp. 75-120 : 83-85

Baeocera beata sp. nov.

Figs 25-30

Holotype: MHNG; ♂; Indonesia, Timor between Soe and Kapan, 1000 m evergreen for. on limest. D. Agosti, 30.3.1991.

Paratypes: MHNG; 3 ♀; with the same data as the holotype.

Etymology: The species epithet is a Latin adjective meaning fertile.

Description: Length 1.15-1.17 mm, width 0.80- 0.82 mm. Body strongly convex, without obvious microsculpture. Head and body very dark reddish-brown to blackish-brown, appendages and apex of abdomen lighter than body. Length/width ratio of antennomeres as follows: III 25/7: IV 26/6: V 28/7: VI 25/7: VII 30/7: VIII 25/8: IX 30/12: X 30/13: XI 35/15. Lateral contours of pronotum and elytra almost continuously arcuate. Pronotum with hardly visible punctation and setation (100x magnification), lateral margins convex, anterior margin broad, basal lobe well developed; lateral pronotal carinae concealed in dorsal view. Tip of scutellum hardly visible. Elytra weakly narrowed apically, not covering abdominal apex, lateral margin carinae concealed or hardly visible near base in dorsal view, sutural striae deep, not shortened, curved at bases to form basal striae abruptly ending about at mid-width of elytra; adsutural areas somewhat convex, parallel, impunctate. Discal punctation conspicuously coarse and fairly dense from bases to apical fourth, with punctures well delimited, puncture intervals about as large to twice as large as puncture diameters; apical fourth to third of elytra extremely finely punctate, appearing impunctate. Epipleural striae entire, punctate, supraepipleural areas each with puncture row. Hind wings well developed. Hypomera impunctate, smooth. Mesoventral suture indistinct, mesoventrite coarsely punctate, with median ridge hardly visible. Mesepimera about twice as long as wide and about twice as long as interval to metacoxae. Metaventrite all over coarsely punctate, punctures on lateral parts much larger than in middle, to part much larger than puncture intervals. Median part of metaventrite flattened. Submesocoxal lines arcuate, with marginal punctures not extending laterally, submesocoxal areas about 0.04-0.05 mm long, as half of interval to metacoxae. Metanepisterna fused to metaventrite, suture indicated by outer row of coarse punctures. Tibiae straight. Sternite 1 with basal puncture row uninterrupted in middle, basal punctures elongate and separated by about 0.03-0.05 mm long wrinkles on lateral parts of sternite, posterior basal punctures appearing impunctate. Male: Protarsomeres hardly widened. Aedeagus (Figs 25-28, 30) 0.34 mm long, moderately sclerotized. Median lobe symmetrical, with basal bulb large, longer than apical process, latter tapering, weakly curved, with acute tip and slightly concave ventral side (lateral view). Articular process moderately large. Parameres almost straight and distinctly widened in apical third, with shallow notch at level of tip of median lobe in dorsal view, bent in basal third in lateral view. Internal sac with gradually narrowed flagellum, lacking distinct guide-sclerite, with subbasal tubercle and membranes distinctly denticulate basally and apically.

Female: Ovipositor (Fig. 29) with long distal gonocoxite weakly narrowed apically, in apical section parallel-sided, bearing long apical seta, gonostyle absent.

Distribution: Indonesia: Timor.

Type locality: Timor, between Soe and Kapan, 1000 m.

Comments: This species is a member of the B. lenta group. The aedeagal characters, in particular the shape of the parameres and the comparatively simple internal sac, suggest relationships with B. jankodadai Löbl, 2012 from Palawan. The latter species differs by the comparatively short antennomere VIII and the coarse elytral punctation not extending onto apical third of elytral disc.