Cephennium giachinoi, Kahlen & Eckelt, 2024

Cephennium giachinoi nov.sp. ( Figs 6-10 View Figs 6-10 )

T y p e M a t e r i a l: Holotype ♁: Italy / Torino, Alpi Graie, Castelnuovo Nigra N, Monte Calvo Wslope, 1150 m, 45.4632°N, 7.6878°E, 21.5.2010, beech leaf litter, leg. Kahlen. / Cephennium giachinoi nov.sp. ♁ det. Kahlen / Holotype TLMF. Paratypes: 29♁♁ 14♀♀: same data as holotype, leg. Kahlen (28♁♁ 13♀♀ TLMF, 1♁ 1♀ cGia).

E t y m o l o g y: The species is dedicated to the first autors longtime friend and specialist in ground and cave beetles Piermauro Giachino, who showed the first autor the discovery site, a natural beech forest in Castelnuovo.

D e s c r i p t i o n: The species is closely related to Cephennium majus REITTER, 1881 , so it seems appropriate to present the description using differential diagnosis: Cephennium majus REITTER, 1881 Cephennium giachinoi nov.sp. Habitus as in Fig. 11 View Figs 11-15 . Body length ranges Habitus as in Fig. 6 View Figs 6-10 . Body length ranges from 1.35 to 1.5 mm. The body is shiny from 1.4 to 1.5 mm. The body is lighter dark brown, with appendages being lighter brown, especially the head, pronotum, and brown. The hair coverage is sparse, appendages, which are notably lighter moderately long, and slightly erect. than the elytra; shiny, with denser, shorter, and almost appressed hair coverage.

The head is shiny, but with indicated fine The head is more strongly shiny,

punctation or micro sculpture, measuring unpunctured, narrower (0.28 mm wide), 0.32 mm wide, with clearly laterally with slightly smaller, clearly laterally protruding eyes. Antennal segments 1 and protruding eyes. Antennae are very simi-

2 are longer than wide, the following lar, but the middle segments (especially segments are almost spherical or barely segment 5) are distinctly longer than wide. longer than wide, and the three-segmented club is weakly demarcated.

The pronotum is wider than long (1.3:1), The pronotum is wider than long (1.3:1), shiny, with fine and widespread, but clea- shiny, with significantly finer and parti-

rly discernible punctures. The greatest cularly more widespread punctures. The width is just before the middle, from greatest width is just before the middle, where it converges straightly backwards, from where it narrows almost straightly without basal bulging in males. backwards, without basal bulging in males. The elytra are narrower than long (1:1.35), The elytra are slimmer (1:1.45), shiny, moderately shiny, and with coarser, and with punctures that are hardly coarser sometimes rasp-like punctures that are less but significantly denser compared to those widespread compared to those on the on the pronotum, without micro sculpture. pronotum. There is an indicated wrinkled The greatest width is before the middle, micro sculpture between these punctures. with sides noticeably less rounded and

The greatest width is before the middle, longitudinally less arched. Also, there are with sides evenly rounded and strongly significantly shallower basal pits at the arched longitudinally and transversely. centre with very small tomentose tufts. There are concave round basal pits,

flattened outward, with very small tomentose tufts.

In males, the front tibiae are slightly In males, the front tibiae are not thickened thickened in the apical half and inwardly in the apical half and are inwardly flatly angulate ( Fig. 14 View Figs 11-15 ). incised ( Fig. 9 View Figs 6-10 ).

Underside: ♁ the metaventrite is flatly Underside: ♁ the metaventrite is depressed, shiny, with very fine and moderately deeply depressed, shiny, with widespread punctures within the fine and widespread punctures and hair impression. However, the margins are coverage across the entire surface ( Fig. 8 View Figs 6-10 ). much coarser and denser in punctures. The entire surface is uniformly hairy ( Fig. 13 View Figs 11-15 ).

Genitalia: Length 0.4 mm. Dorsal Fig. 12 View Figs 11-15 ., Genitalia: Length 0.47 mm. Dorsal Fig. 7 View Figs 6-10 , lateral Fig. 15 View Figs 11-15 . lateral Fig. 10 View Figs 6-10 .