Pselaphogenius treskanus

Pselaphogenius treskanus (Karaman, 1940)

Figs 2D – 6D, 7G, F

Material studied. 2 ♁♁, 18 exx., with one label “ GREECE [GR 004], 20.vi.2021 / OROS VITSI, 2km SW DROSOPIGI Vill. / N40°40’13.4’’ E21°26’00.8’’ / sifting in Fagus forest along stream / 1062m, Winkler app. Extraction / P. Baňař, P. Hlaváč & A. Balázs lgt.” [white, printed] (MMBC, PCPH); 3 ♁♁, 5 ♀♀, 37 undetermined sex, with one label “ GREECE [GR 010], 21.vi.2021 / OROS VITSI, 2km SE of OXYA Vill. / N40°37’17.4’’ E21°22’32.7’’ / sifting in Fagus forest, 1599m / Winkler app. extraction / P. Baňař, P. Hlaváč & A. Balázs lgt. ” [white, printed] (MMBC, PCPH). 1 ♁, 4 undetermined sex, with one label “GR. Florina, No. 28, 15 km W Florina / Oros Varnous, 1600m / 40°47’51N, 21°14’42E / 23.4.2000, V. Assing ” [white, printed] PCVB). 1 ♁, 1 undetermined sex, with one label “GR. Florina, No. 28, 15 km W Florina / Oros Varnous, 1600m / 40°47’51N, 21°14’42E / 23.4.2000, V. Assing ” [white, printed] PCVB).

Supplement description. Body setation with shorter but denser hair than Afropselaphus (Fig. 2D); body length 2.0– 2.2 mm. Coloration largely dark brown, maxillary palpi and legs lighter, posterior margin of elytra much darker, almost black (Fig. 2D). Pilosity of body sparse; head, legs, and antennae covered by sparse, adjacent golden setae; frontal rostrum slightly bifid (Fig. 3D); eyes with 7–9 ommatidia (Figs. 3D, 4D); club of maxillary palpomere 4 elongate; ocular-mandibular carina less pronounced; median gular ridge produced into a rounded bulge (Fig. 4D), as in all congeners; metaventrite produced into pair of small protrusions (Fig. 6D); elytra with rounded external apex; elytral carinae more strongly pronounced; elytra with few rows of setae, which are denser on elytral marginal line; with row of setae on distal margin of elytra; abdomen distinctly wider than elytra; no tufts on gular plate; tufts on prothoracic-mesothoracic junction almost completely reduced, tufts on tergite 1 (IV) and sternite 2 (IV) much less dense than in other tergites; proximal margin of tergite II with very dense pilosity (Fig. 2D), remaining segment covered by sparse setae. Aedeagus (Fig. 7G, H) with single median sclerite with tapered apex.

Habitat. Mt Vitsi, this species was collected from leaf litter in dense forest (Fig. 8D).