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 ? Euconnus sp. 2 ( Figs 27 , 189–192 ) Material studied. Late Eocene of Europe , Rovno amber: sex unknown; inclusion in subquadrate piece of amber 10 mm long ( Fig. 27 ), collection number K-24859 ( SIZK ). FIGURES 186–188. Euconnus sp. 1 (K-9126). Nearly dorsal (186), ventral (187) and lateral (188) views. Abbreviations: abp, antebasal pit; bef, basal elytral fovea; bst, basisternal part of prosternum; cl, clypeus; fr, frons; hy, hypomeron; hyr, hypomeral ridge; lbr, labrum; lp, labial palp; md, mandible; msvp, mesoventral intercoxal process; mtvp, metaventral intercoxal process; mxp3–4, maxillary palpomere III–IV; pg, pygidium; slc, sublateral carina; st3–8, abdominal sternite III–VIII; v3, metaventrite. Description. Body ( Figs 189–192 ) elongate, relatively stout and strongly convex, nearly black; BL 1.55 mm . Head ( Figs 189–192 ) broadest at eyes, HL 0.30 mm ; shape of vertex and frons difficult to assess but both convex ( Fig. 192 ); tempora seem about as long as eyes or slightly longer ( Fig. 192 ). Punctures and setae on frons and vertex poorly visible, setae seem sparse and suberect ( Fig. 192 ), tempora ( Fig. 192 ; tm ) covered with sparse thick bristles. Antennae ( Figs 189–192 ) slightly shorter than half BL, AnL 0.75 mm , scape and pedicel strongly elongate, shapes of most of flagellomeres, especially distal ones, difficult to assess, but antennae seem to have indistinctly demarcated club composed of antennomeres VIII–XI. Pronotum ( Figs 189–192 ) of unclear shape; PL 0.38mm ; anterior margin seems arcuate; posterior margin shallowly bisinuate, shapes of pronotal corners and lateral margins difficult to assess; base of pronotum with short but distinct sublateral carinae ( Fig. 192 ; slc ) and one (inner) pair of antebasal pits ( Fig. 192 ; abp ). Punctures on pronotal disc ( Figs 191–192 ) small but distinct, separated by spaces 3–4 times as wide as diameters of punctures; setae ( Figs 101–192 ) short, sparse, suberect; sides of pronotum with thick bristles. Elytra ( Figs 189–192 ) elongate oval, strongly convex, EL 0.75 mm ; punctures and setae similar to those on pronotum ( Figs 191–192 ). Scutellum not visible between elytral bases. Legs ( Figs 189–192 ) moderately long, slender, unmodified. Remarks. This specimen resembles many extant species of Euconnus , but key generic characters, located mostly on the ventral side of pterothorax, are not visible. If this is Euconnus , then certainly not conspecific with the two specimens described above.