Hydroporus artvinensis sp. n.

(Figs 3, 13)

Type locality. Turkey, Artvin province, Şavşat, Karagöl, ca. 41.24N 42.37E (locality 7 in Fig. 13).

Holotype. 3, " TR –Artvin, Şavşat, Karagöl, 17.9.2001, Leg. Ö. Köksal Erman"; " Holotype, Hydroporus artvinensis sp. n., H. Fery & Ö.K. Erman det. 2009" [red, printed] (NMW). Paratype. 1 Ƥ, same label data as the holotype, but a red paratype label (CHF).

Differential diagnosis. Very similar to H. cagrankaya sp. n., but upper side black except on vertex of head. Punctation of elytra slightly coarser. Ventral side with gula and genae black; prosternal process blackish. Legs uniformly rather dark brownish, thus darkening of femora indistinct. Antennal segments also uniformly darker, apical darkening indistinct. Contrast of brownish legs and antenna to rest of surface decidedly weaker than in H. toledoi sp. n.

Males. Median lobe of aedeagus in ventral view weakly tapering to apex, tip broadly rounded (Fig. 3).

Females. See remarks under H. cagrankaya sp. n.

Measurements. TL: male holotype: 3.3 mm, MW: 1.65 mm, TL/MW: 2.0; female paratype: TL: 3.4 mm, MW: 1.75 mm; TL/MW: 1.94, IO/MP: 0.46.

Distribution. So far known only from the locus typicus Karagöl near Şavşat in the Artvin province, north-eastern Turkey (locality 7 in Fig. 13).

Derivatio nominis. The species is named after the Artvin province in north-eastern Turkey, where the new species has been found.