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 ? Microscydmus sp. 2 ( Figs 30 , 204–208 ) Material studied. Late Eocene of Europe , Rovno amber: sex unknown; inclusion in elongate, subtrapezoidal prism of amber 14 mm long ( Fig. 30 ), collection number K-6943 ( SIZK ). Description. Body ( Figs 204–208 ) elongate, moderately slender and convex, light brown; BL 0.73 mm . Head ( Figs 204–208 ) short and subhexagonal, broadest at eyes, HL 0.13 mm , HW 0.19 mm ; vertex ( Fig. 207 ; vt ) and frons ( Fig. 207 ; fr ) confluent, weakly convex and together subhexagonal, strongly transverse; eyes large, oval, strongly convex; tempora in lateral view ( Fig. 208 ) distinctly shorter than eyes. Punctures and setae on frons and vertex poorly visible. Antennae ( Figs 204–208 ) distinctly shorter than half BL, AnL about 0.25 mm , scape and pedicel strongly elongate, antennomeres III–VII each about as long as broad or slightly elongate, VIII slightly elongate, X about as long as broad, XI slightly transverse, XI much shorter than IX–X combined, about 1.2 × as long as broad, slightly narrower than X and rounded at apex. Pronotum ( Figs 204, 207 ) round, broadest near anterior third; PL 0.20 mm , PW 0.20 mm ; anterior and posterior margins weakly arcuate, anterior and posterior pronotal corners broadly obtuse-angled and blunt; sides strongly rounded; antebasal structures poorly visible. Punctures and setae on pronotal disc poorly visible. Elytra ( Figs 204–205, 207–208 ) elongate oval, moderately convex, EL 0.40 mm , EW 0.30 mm , EI 1.33; punctures ( Fig. 208 ) fine but discernible, separated by spaces 3–4 × as wide as diameters of punctures; setae ( Fig. 208 ) sparse, short, suberect. Legs ( Figs 205–206, 208 ) moderately long, slender, unmodified. Remarks. This small specimen is tentatively identified as Microscydmus , but too few important structures are observable to confirm this placement.