5. Polymerus (Polymerus) russatus sp. nov.

(Figs 2 E; 3 D; 4 E; 9 B; 10 D; 40 E, F)

Material examined. Holotype. Russia: Republic of Dagestan, Petrovsk [Makhachkala] (V. Jakovlev), 1 male (ZISP).

Paratypes. Russia: Republic of Dagestan, Petrovsk [Makhachkala] (V. Jakovlev), 2 females ; Azerbaijan: “Elizavetpol’skaya Govern.”, Geoktapa, 17 July 1907 (R. Schmidt), 1 female (ZISP) .

Diagnosis. Recognised by second antennal segment entirely yellow, corium with large triangular vague brownyellow pouch at base, cuneus red, with large black spot near external margin (Fig. 9 B) and left paramere hypophysis with straight superior margin before apex from lateral view (Fig. 3 D). This species is closely related with P. holosericeus and differs from it by following characters: longitudinal carina on right wall of posterior right lobe of vesica long, almost reaching lobe apex, latter not extended and not bent upwards, basal sclerite on rightinferior surface of posterior right lobe dilated and heavily sclerotised distally (Fig. 10 D), medial lobe of gynatrium with wide base and without any sclerotization on ventral wall, medial protrusion on dorsal margin of interramal sclerite triangular.

Description. Colouration (Fig. 40 E, F). Head before antennae often with two brownish-yellow spots. In all studied females strip on posterior margin of pronotum wider than in male, entire xyphus of prothorax, apex of scutellum, narrow strip along external margin of corium, bases of femora, dorsal surface of abdomen in its base and large spot on each side of abdominal venter brownish-yellow. Xyphus of prothorax in male black, with yellow edging. Triangular spot at base of corium large in females, smaller in male. Apex of cuneus red in males and yellow in females.

Right paramere (Fig. 2 E), vesica and gynatrium as in P. holosericeus except characters listed in the diagnosis.

Etymology. The Latin word russatus means “stained with blood”, “covered with gore”, this specific name are given owing to dark red cuneus of this species.

Distribution (Fig, 17). Russia (Republic of Dagestan) and Azerbaijan.

Bionomics. Perhaps this species prefers semideserts within which its type locality lies. These semideserts belong to Kuro-Araksinan province of Iran-Turanian subregion of floral Afro-Asiatic Desert Region according to scheme proposed by Lavrenko (1965).