Baeocera villaricensis, Löbl, 2018

Löbl, Ivan, 2018, Review of the genus Baeocera of Chile (Coleoptera: Staphylinidae: Scaphidiinae), Linzer biologische Beiträge 50 (2), pp. 1305-1317 : 1311-1312

3.12 Baeocera villaricensis nov.sp. ( Figs 17-19 )

T y p e m a t e r i a l: Holotype ♂, CHILE: Region X (Los Lagos) Prov. Valdivia , NP de Villarica , S-Seite [south area] 39°27.896’S, 71°51.118’W, 1206 m Araucaria-Nothofagus-Wald mit Bambus , Totholz , Moos u. Streu gesiebt [ Araucaria-Nothofagus forest with bamboo, dead wood, moos and litter, sieved], 4.I.2006, leg. M. Schülke [3] ( ZMUB). Paratypes: 5♂♂, 2♀♀, 8 specimens sex not examined, with the same data as the holotype ( ZMUB, MHNG).

D e s c r i p t i o n: Length 1.30-1.38 mm, width 0.76-0.83 mm. Frons and pronotum entirely dark brown or pronotum dark on variably extended anterior-median area, elytra, ventral side of body and femora uniformly bright reddish, notably lighter than pronotum or dark pronotal area, abdominal apex, tibiae, tarsi and antennae ochraceous or yellowish. Eye width somewhat less than half shortest interval between eyes. Length/width ratios of antennomeres as: III 19/5: IV 22/5: V 23/5: VI 14/7: VII 18/10: VIII 16/12: IX 20/14: X 20/15: XI 30/18. Dorsal side of body not microsculptured. Pronotal punctation very fine, hardly visible at 20 times magnification. Minute tip of scutellum exposed. Elytra widest posterior basal fifth, weakly narrowed apically and with straight lateral margins between widest point and apices; sutural striae shortened, starting 0.08-0.17 mm posterior level of scutellar tip; adsutural areas raised; elytral punctation distinct, consisting of punctures larger than pronotal punctures. Mesepimera about two times as long as wide and two times as long as intervals to mesocoxae. Metaventrite not microsculptured, with apicomedian impressions, without distinct admesal punctures, all over very finely punctate, submesocoxal areas subtriangular, 0.06 mm long, slightly longer than third of shortest intervals to metacoxae, with concave outer margins. Metanepisterna flat, parallel-sided, about 0.04 mm wide. Tibiae straight, thickened apically. Abdomen with punctulate microsculpture.

Male characters: Protarsomeres I-III hardly widened. Aedeagus as Figs 17-19 , 0.40 mm long.

E t y m o l o g y: The species epithet is a Latin adjective derived from the name of the type locality.

C o m m e n t s: This species may be readily distinguished by its short antennae, with the club segments each less than two times as long as large. It differs also from its Chilean congeners with shortened sutural stria of elytra by the colour pattern of the body. The aedeagal characters suggest relationships to B. chilensis and allied.

Figures

Figs 14-19: Aedeagi of Baeocera, in dorsal view; (14) B. variicolorata nov.sp., parameres, scale = 0.1 mm; (15, 16) ditto, internal sac, scale = 0.05 mm; (17) B. villaricensis nov.sp., scale = 0.1 mm; (18) ditto, parameres, scale = 0.1 mm; (19) ditto, internal sac, scale = 0.05 mm.