† Rovnoscydmus frontalis sp. n.

(Figs 12, 108–114)

Type material. Holotype: Late Eocene of Europe, Rovno amber: sex unknown; inclusion in elongate, triangular prism of amber 21.5 mm long (Fig. 12), collection number K-9579 (SIZK).

Diagnosis. Rovnoscydmus with frons demarcated from vertex by faint, broadly and inversely V-shaped transverse carina; BL 0.88 mm; EI 1.64.

Description. Body (Figs 108–112, 114) elongate, slender and relatively strongly convex, brown; BL 0.88 mm.

Head (Figs 108–114) broadest at eyes, HL 0.18 mm, HW 0.18 mm; vertex and frons together subtrapezoidal and moderately transverse; frons anteriorly with faint transverse carina angulate at middle (Fig. 113; frc); supraantennal tubercles weakly raised but distinct; compound eyes large, strongly convex, oval; tempora about as long as eyes. Punctures on head fine and indistinct, separated by spaces as wide as 3–4 diameters of punctures; setae (Fig. 112) short, sparse, suberect. Antennae (Figs 108–114) shorter than half BL, AnL 0.38 mm, antennal club indistinctly demarcated; antennomeres I–II elongate, III transverse, IV–IX each about as long as broad, X slightly transverse, XI much shorter than IX–X combined, slightly longer than broad, with rounded apex.

Pronotum (Figs 108, 112) elongate, broadest between middle and anterior third; PL 0.25 mm, PW 0.18 mm; punctures on disc (Fig. 112) small but distinct, separated by spaces 3–5 times as wide as diameters of punctures; setae (Fig. 112) short, sparse and suberect, in anterior half of disc directed posteriorly, in posterior half posteromesally.

Elytra (Figs 108, 112) elongate oval, strongly convex, broadest in between middle and anterior third, EL 0.45 mm, EW 0.28 mm, EI 1.43; punctures and setae similar to those on pronotum (Fig. 112).

Legs (Figs 108–112, 114) moderately long, slender, unmodified.

Etymology. The name frontalis refers to the frontal carina.