Cephennium liguricum, Kahlen & Eckelt, 2024

Kahlen, Manfred & Eckelt, Andreas, 2024, Contribution to the knowledge of the Italian species of the genus Cephennium MÜLLER & KUNZE, 1822 (Coleoptera, Staphylinidae, Scydmaeninae), Linzer biologische Beiträge 56 (1), pp. 69-109 : 81-82

Cephennium liguricum nov.sp. ( Figs 16-20 , 80 )

C. discrepans BESUCHET i.l.

T y p e M a t e r i a l: Holotype ♁: Italy / Genova , Ligurian Apennines, Passo del Faiallo N, 950 m, 44.4706°N, 8.6669°E, 8.5.2010, hazel leaf litter between rocks, leg. Kahlen. / Cephennium liguricum nov.sp. ♁ det. Kahlen / Holotype TLMF. Paratypes: Italy / Savona , Finale Ligure NW: 2♁♁ 1♀ Verezzi E, Cava del Colle, 250 m, 44.1656°N, 8.3169°E, 31.12.2018, litter under bushes between rocks, leg. Kahlen ( TLMF) ; 1♁ Verezzi N, il Castellaro , 325 m, 44.1719°N, 8.31°E, 29.12.2018, leaf and branch litter, leg. Kahlen ( TLMF) ; 1♁ Verezzi N, 250 m SE Torre Bastia, 320 m, 44.1747°N, 8.3086°E, 16.4.2019, dry leaf litter, leg. Kahlen ( TLMF) .

Non type material: 2♁♁: Emilia [Romagna], [Parma], Santa Maria Taro, leg. Fiori, coll. Besuchet; 1♁: Ruta [Liguria, Genova], leg. Dodero, coll. Besuchet (unpublished notes Besuchet) .

E t y m o l o g y: The species name derives from its predominant distribution in the Liguria region.

D e s c r i p t i o n: Habitus as in Fig. 16 . Body length 1.15-1.2 mm. Body dark reddish-brown to blackish, appendages slightly lighter; glossy, hair sparse, moderately long, and almost appressed. Head glossy, unpunctured, with very prominent eyes on the sides. Antennal segments 1 to 7 slightly longer than wide, segment 8 distinctly smaller than segment 7 and rounded, followed by the distinctly separated three-segmented club. Pronotum wider than long (1.3:1), glossy with very fine and extremely widespread punctation, greatest width before the middle, converging straight towards the rear from here. Elytra narrower than long (1:1.36), glossy and with punctation as fine and widespread as that on the pronotum. Greatest width before the middle, sides evenly rounded. The centrally rounded, laterally flattened, extended basal foveae with a denser central tuft of hair. In males, the fore and middle tibiae are slightly thickened in their apical halves ( Fig. 19 ). Underside: ♁ with metaventrite not impressed, flat, highly glossy, scarcely haired. Extensively fine and widespread punctured towards the edges and further towards the sides ( Fig. 18 ) Genitalia: Length 0.32-0.35 mm. Dorsal Fig. 17 & 80 ., lateral Fig. 20 .

Figures

Figs 16-20: Cephennium liguricum. (16) male habitus holotype, sb: 0.5 mm; (17) aedeagus dorsal view holotype, sb: 0.1 mm; (18) ventral view of metaventrite; (19) male front tibia; (20) aedeagus lateral, sb: 0.1 mm (Figs 18-20 paratype).

Figs 79-87: Drawings of aedeagi and internal structures (based on Besuchet unpublished). (79) Cephennium friulicum, (80) C.liguricum, (81) C.lombardum, (82) C.tarvisinum, (83)C. vicentinum, (84) C. montiumliguriae, (85) C. peezi, (86) C. dolomitanum, (87) C. julicum.