Baeocera danieli, Löbl, 2018

Löbl, Ivan, 2018, Review of the genus Baeocera of Chile (Coleoptera: Staphylinidae: Scaphidiinae), Linzer biologische Beiträge 50 (2), pp. 1305-1317 : 1307

3.3 Baeocera danieli nov.sp. ( Figs 1-3 )

T y p e m a t e r i a l: Holotype: ♂ X Reg. Pr. Llanquihue, PN Alerce Andino , 550 m, Laguna Tringulo , 6.I.93, D. Burckhardt nr 38b, 41°40’S 72°35W ( MHNG). Paratypes: 2♀♀, with the same data as the holotype ( MHNG).

D e s c r i p t i o n: Length 1.25-1.28 mm, width 0.78-0.80 mm. Pronotum, hypomera and elytra dark reddish-brown, basal and anterior areas of pronotum somewhat lighter than pronotal middle. Venter of thorax, hypomera excepted, blackish. Basal abdominal segments blackish or dark brown, apical abdominal segments light, ochraceous or yellowish. Femora dark reddish-brown, tibiae, tarsi and antennae lighter than femora, ochraceous or yellowish. Eye width about as third of shortest interval between eyes. Length/width ratios of antennomeres as: III 18/6: IV 19/7: V 23/7: VI 15/7: VII 20/9: VIII 18/8: IX 20/10: X 22/11: XI 35/12. Dorsal and ventral sides of body not microsculptured. Pronotal punctation very fine, hardly visible at 80 times magnification. Scutellum concealed. Elytra widest posterior basal sixth, strongly narrowed from widest point toward apices with lateral margins oblique; sutural striae strongly shortened, starting in middle third of sutural length. Elytral punctation about as fine as pronotal punctation. Mesepimera about three times as long as wide and three times as long as intervals between them and mesocoxae. Metaventrite convex in middle part, with two shallow, distinctly punctate apicomedian impressions, finely punctate on lateral and most of median surface; punctation on lateral parts of metaventrite about as fine as that on pronotum. Submesocoxal areas about 0.06-0.07 mm long, about as long as shortest intervals between them and metacoxae; submesocoxal lines convex with outer section partly straight, parallel with body axis, indistinctly punctate. Metanepisterna fused with metaventrite. Tibiae straight, thickened apically.

Male characters: Protarsomeres I-III slightly widened. Aedeagus as Figs 1-3 , 0.35 mm long.

E t y m o l o g y: The species is dedicated to my friend Daniel Burckhardt (Basel) who collected the specimens.

C o m m e n t s: This species may be easily distinguished from all other Chilean congeners by the elytra strongly narrowed apically, with strongly shortened sutural striae, the concealed scutellum and the coalescent metanepisterna. The aedeagal characters suggest relationships to B. jarmilae , though the shape of the parameres is distinctive.

Figures

Figs 1-7: Aedeagi of Baeocera, in dorsal view; (1) B. danieli nov.sp., scale = 0.1 mm; (2) ditto, paramere, scale = 0.1 mm; (3) ditto, apical process of median lobe with extruded internal sac, scale = 0.05 mm; (4) B. darwini nov.sp., scale 0.1 mm; (5) ditto, parameres, scale = 0.1 mm; (6) ditto, internal sac, scale = 0.1 mm; (7) B. jarmilae nov.sp., in dorsal view, scale = 0.1 mm.