Cephennium tarvisinum, 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 : 89

Cephennium tarvisinum nov.sp. ( Figs 36-40 , 82 )

C. lanceolatum BESUCHET i.l.

T y p e M a t e r i a l: Holotype ♁: Italy / Treviso , Farra di Soligo, Borgo Grotta, 215 m, 45.9119°N, 12.1181°E, 17.5.1985, leaf litter, leg. Kahlen. / Cephennium tarvisinum nov.sp. ♁ det. Kahlen / Holotype TLMF. Paratypes: 2♁♁ 1♀: same data as holotype, leg. Kahlen ( TLMF) ; 2♁: Italy / Treviso , Guia, Costa Grande N slope, 250 m, 45.9039°N, 12.0639°E, 16.5.1985, leaf litter, leg. Kahlen ( TLMF) ; 1♁ 1♀: Italy / Treviso , San Michele di Feletto, Grotta Landron surroundings, 100 m, 45.8834°N, 12.2377°E, 28.5.1986, leaf litter on gravel, leg. Kahlen ( TLMF) ; 1♁: San Michele di Feletto , 3.10.1947, leg. Meggiolaro ( NMS) ; 2♁: Italy / Treviso , Montello, Val di Cal Traversa, 180 m, 45.7985°N, 12.1361°E, 21.5.1985, leaf litter, leg. Kahlen ( TLMF) ; 1♁: Italy / Treviso , Montello, Val di Bo del Gobbo, 150 m, 45.7939°N, 12.135°E, 21.5.1985, leaf litter, leg. Kahlen ( TLMF).1♁ 1♀: Italia / Treviso, Montello, Il Forame Eingangszone, 110 m, 45.8066°N, 12.1607°E, 24.5.1990, Laubstreu, leg. Kahlen ( TLMF) .

Type material collection Meybohm : Paratypes, all cMey: Italia / Treviso: 1♁: Valdobbiadene, 250 m, 45.9016°N, 11.9958°E, 11.6.1990, leg. H. Daffner ; 1♁ 1♀: Valdobbiadene Saccol , Col Croset, 250 m, 45.8971°N, 12.0209°E, 2.5.1990, leg. H.Daffner ; 1♀: Valdobbiadene , Pian de Farnè, 1100 m, 45,9250°N, 12,0278°E, 26.9.2013, leg. H. Meybohm ; 3♁♁ 1♀: Refrontolo , 200 m, 45.9254°N, 12.2076°E, 3.5.1986. leg. V. Brachat ; 1♁: Miane-Campea , 180 m, 45.9278°N, 12.1103°E, 26.5.1990, leg. H. Daffner ; 1♁: Campea W, 240 m, 45.9206°N, 12.0870°E, 2.10.2013, leg. H. Meybohm ; 1♁: Nervesa NW, Fiume Piave , 100 m, 45.8533°N, 12.1611°E, 2.10.2013, leg. H. Meybohm ; 1♁: Montello , 1.5.1986, leg. V. Brachat. All specimens det. Kahlen.

Non type material: 2♁♁ 4♀♀: Treviso , Conegliano, San Michele di Feletto, leg. & coll. Sopracordevole ; 5♁♁ 2♀♀: Conegliano , San Michele di Feletto, leg. & coll. Meggiolaro ; 2♁ 3♀♀: Conegliano , San Michele di Feletto, leg. & coll. Bucciarelli ; 2♁♁ 1♀: Conegliano , Grotta Andron, leg. & coll. Meggiolaro ; 1♁ 4♀♀: Treviso , Montello, Bus del Frate, leg. & coll. Meggiolaro ; 2♁♁ 5♀♀: Treviso , Montello, leg. & coll. Cadamuro or Burlini ; 1♁: Treviso , San Pietro di Barbozza, leg. Raffone, coll. Besuchet ; 2♁♁ 3♀♀: Belluno , Pieve d´Alpago, Val Cantuna, leg. & coll. Raffone ; as well as other specimens from the mentioned localities in coll. Besuchet (unpublished notes Besuchet).

E t y m o l o g y: The species name is derived from "Tarvisium," the Roman name for the province of Treviso (where most of the collection sites are located).

D e s c r i p t i o n: Habitus as in Fig. 36 . Body length 1.0- 1.1 mm. Body and appendages dark reddish-brown; shiny, hair moderately dense, long, and appressed. Head shiny, unpunctured, with weakly protruding eyes on the sides. Antennal segments 1 and 2 distinct, 3-5 slightly longer than wide, 6-8 spherical, with segments 6 and 8 distinctly smaller than segment 7, the three-segmented club distinctly offset. Pronotum slightly wider than long (1.2:1), shiny with fine and widespread punctures, which are recognizable as slightly raspy towards the base, greatest width just before the middle, evenly rounded from here to the front, converging straight towards the back. In the ♁, the middle of the pronotum is very weakly elevated before the base. Elytra narrower than long (1:1.3), shiny and compared to the pronotum with significantly coarser (recognizable as raspy at the base of the pronotum) and denser punctures; greatest width before the middle (in the first third), sides more strongly rounded to the front, weaker to the back. The small basal pits, located in the middle between the suture and the lateral margin, with a filling tomentum pad. In the male, the front tibiae are slightly thickened in their apical half, with a noticeable notch towards their tip on the inner side ( Fig. 39 ). Underside: ♁ with metaventrite moderately depressed, shiny, sparsely hairy. Evenly fine and widespread punctured throughout (centre, marginal ridge, sides) ( Fig. 38 ). Genitalia: Length 0.32-0.35 mm. Dorsal Fig. 37 , along with unpublished drawing by BESUCHET Fig. 82 ; lateral Fig. 40 .

Figures

Figs 36-40: Cephennium tarvisinum. (36) male habitus holotype, sb: 0.5 mm; (37) aedeagus dorsal view holotype, sb: 0.1 mm; (38) ventral view of metaventrite; (39) male front tibia; (40) aedeagus lateral, sb: 0.1 mm (Figs 36-40 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.