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 Cephennomicrus sp. 5 ( Figs 10 , 99–102 ) Material studied. Late Eocene of Europe , Rovno amber: sex unknown; inclusion in rectangular prism of amber 13 mm long ( Fig. 10 ), collection number DU-32 ( SIZK ). Description. Body ( Figs 99–102 ) elongate and moderately strongly convex, dark brown; BL 0.76 mm . FIGURES 99–102. Cephennomicrus sp. 5 (DU-32). Laterodorsal (99, 101) and ventrolateral (100, 102) view. Abbreviations: abg, antebasal groove; abp, antebasal pit; bef, basal elytral fovea; bst, basisternal part of prosternum; hy, hypomeron; hyr, hypomeral ridge; lpc, lateral pronotal carina; mcp, mesocoxal projection; mtvp, metaventral intercoxal process; st3–8, abdominal sternite III–VIII; v3, metaventrite. Head ( Figs 99–102 ) broadest at eyes, HL 0.10 mm , HW 0.18 mm ; frons and vertex confluent, weakly convex and together strongly transverse; supraantennal tubercles weakly marked; compound eyes large and strongly convex, moderately coarsely faceted; punctures on frons sparse and fine; setae sparse, short and nearly recumbent. Antennae ( Figs 99–102 ) much shorter than half BL, AnL about 0.25 mm , shapes of most antennomeres difficult to assess, but IX seems at least as long as broad or elongate, X transverse, XI about as long as IX–X combined or slightly shorter, about as broad as X and less than twice as long as broad, nearly or completely symmetrical. Pronotum ( Figs 99, 102 ) subrectangular, but exact shape difficult to assess; PL 0.23 mm , PW 0.25 mm ; pronotal disc seems to be broadest in front of middle, sides rounded in anterior third and weakly sinuate posteriorly; posterior pronotal corners obtuse-angled; posterior margin shallowly bisinuate with indistinct flattening in front of scutellum; base with two pairs of small and shallow but distinct antebasal pits ( Fig. 101 ; abp ), only inner pair connected by narrow antebasal groove ( Fig. 101 ; abg ). Punctures on pronotal disc fine but distinct, separated by spaces 1.5–2 × as wide as diameters of punctures; setae short, moderately dense, nearly recumbent ( Figs 99, 101 ). Elytra ( Figs 99, 101 ) elongate oval, moderately convex, EL about 0.58 mm , EW about 0.30 mm , EI about 1.46; punctures and setae similar to those on pronotum ( Figs 99, 101 ) but slightly denser. Legs ( Figs 100, 102 ) moderately long, slender, unmodified; all tibiae straight or weakly curved. Remarks. See remarks for Cephennomicrus sp. 3.