Kmentia gen. nov.

Type species. Lygaeus festivus Fabricius, 1803, here designated.

Description. Body large (♂♂ 15.50–19.60 mm, ♀♀ 16.00–18.90 mm).Antennae in both sexes long, always longer than pronotum, sometimes even longer than combined length of head and pronotum; antennomere 1 longer than antennomere 2 (Figs 93−94); there is great variability in length of antennae among specimens. As an example, the length of antennomeres of three large and three small males are given here: Large males (mm): 1 – 7.13, 6.59, 6.43; 2 – 6.32, 6.05, 5.56; 3 – 3.35, 3.19, 2.11; 4 – 3.89, 3.62, 3.59; small males (mm): 1 – 4.27, 4.86, 4.8l; 2 – 3.89, 4.32, 4.37; 3 – 2.11, 2.32, 2.38; 4 – 3.19, 3.24, 3.08.

Callar lobe only slightly gibbose, without sexual differences (Figs 93−94). Labium reaching between mesocoxae. Profemora sexually dimorphic; in females more slender, with smaller number of small denticles; in small males profemora similar to those of females (Figs 93−94). Ventral surface of profemora with short longitudinal furrow limited to its apical third; basal two-thirds medially convex with numerous denticles on the entire surface (Figs 83, 97). Protibiae ventrally unarmed (Figs 95−96). Peritreme of metathoracic scent glands longitudinal, crescent-shaped, projecting both anteriad and posteriad (Fig. 84).

Pygophore (Figs 85−88). Ventral rim slightly concave, rounded; lateral rim more elevated than ventral rim, strongly rounded, descending towards dorsal rim. Lateral rim infolding only slightly sloping into the genital chamber; anal tube wide, long, reaching middle of genital chambre (Fig. 86).

Parameres (Figs 89−92). Parameres horizontal, their apices approaching and standing opposite each other, their apical portions bent dorsally, apex hook-shaped, pointed (Figs 91−92), distinctly surpassing ventral rim of pygophore (see in lateral view − Fig. 88).

Female internal genitalia were described by DUVIARD (1975).

Differential diagnosis. Kmentia gen. nov. belongs to Physopeltinae because of the strongly S-shaped intersegmental sulci between the abdominal sternites. It differs in several characters from the other genera of the subfamily, warranting its placement in a tribe of its own – Kmentiini trib. nov.: labium reaching between mesocoxae; callar lobe weakly gibbose in both sexes; ventral surface of profemora in both sexes with only short longitudinal furrow limited to its apical third, basal two-thirds medially convex with numerous denticles on the entire surface; protibia in both sexes unarmed; and structure of the male genitalia (parameres horizontally positioned, their apices approaching and standing opposite each other (Fig. 85), bent dorsally in their apical portion, apex hook-shaped, pointed dorsally (Figs 85, 87), distinctly surpassing ventral rim of pygophore (see in lateral view − Fig. 88).

Etymology. This new genus is named in honour of my friend and colleague Petr Kment (Department of Entomology, National Museum, Prague) with thanks for his help. Gender is feminine.