Diversity of Scydmaeninae (Coleoptera: Staphylinidae) in Upper Eocene Rovno amber Author Jałoszyński, Paweł Author Perkovsky, Evgeny text Zootaxa 2016 4157 1 1 85 journal article 10.11646/zootaxa.4157.1.1 2389f078-1812-4b4e-826a-561cd7e46654 1175-5326 262413 6BF4514A-892F-499F-BC1E-B7920C7A00B0 † Rovnoscydmus sp. specimen 5 ( Figs 18 , 139–144 ) Material studied. Late Eocene of Europe , Rovno amber: sex unknown; inclusion in elongate, subtriangular prism of amber 9 mm long ( Fig. 18 ), collection number K-8968 ( SIZK ). Description. Body ( Figs 139–144 ) elongate, relatively stout and strongly convex, brown; BL 1.05 mm . Head ( Figs 139–144 ) broadest at eyes, HL 0.15 mm , HW 0.20 mm ; poorly visible; supraantennal tubercles indistinct; compound eyes large, strongly convex, oval; tempora slightly shorter than eyes. Antennae ( Figs 139– 143 ) distinctly shorter than half BL, AnL about 0.38 mm , antennal club indistinctly demarcated; antennomeres I–II elongate, III–IV seem to be slightly transverse, V slightly elongate, VI–VII about as long as broad, VIII transverse or about as long as broad, IX and X about as long as broad, XI much shorter than IX–X combined, about 1.2 × as long as broad, with rounded apex. Pronotum ( Figs 139, 142 ) round, broadest site not possible to define; PL 0.25 mm , PW 0.25 mm ; punctures on disc ( Fig. 142 ) small but distinct, separated by spaces 2–3 times as wide as diameters of punctures; setae ( Fig. 142 ) short and sparse, nearly recumbent, on anterior portions of hypomera replaced by distinct thick bristles ( Fig. 143 ). Elytra ( Figs 139, 142 ) elongate oval, strongly convex, broadest site not possible to define, EL 0.65 mm , EW about 0.48 mm , EI about 1.37; punctures similar to those on pronotum but slightly sparser; setae poorly visible ( Fig. 142 ). Legs ( Figs 139–144 ) moderately long, slender, unmodified. Remarks. This specimen seems to be stouter than remaining inclusions of Rovnoscydmus and may represent a separate species, but the state of preservation and orientation in amber make comparisons difficult. Alternatively, it may be conspecific with Rovnoscydmus specimens 4, 8 and? Rovnoscydmus specimen 10, as they were all found in one piece of amber.