Euconnus

Jałoszyński, Paweł & Perkovsky, Evgeny, 2016, Diversity of Scydmaeninae (Coleoptera: Staphylinidae) in Upper Eocene Rovno amber, Zootaxa 4157 (1), pp. 1-85 : 61-62

publication ID	https://doi.org/ 10.11646/zootaxa.4157.1.1
publication LSID	lsid:zoobank.org:pub:6BF4514A-892F-499F-BC1E-B7920C7A00B0
DOI	https://doi.org/10.5281/zenodo.5681828
persistent identifier	https://treatment.plazi.org/id/03A187A9-2905-FFCC-FF03-C2169F54F86C
treatment provided by	Plazi
scientific name	Euconnus
status

Treatment

? Euconnus sp. 2

( Figs 27 View FIGURES 21 – 34 , 189–192 View FIGURES 189 – 190 View FIGURES 191 – 192 )

Material studied. Late Eocene of Europe , Rovno amber: sex unknown; inclusion in subquadrate piece of amber 10 mm long ( Fig. 27 View FIGURES 21 – 34 ), collection number K-24859 ( SIZK).

Description. Body ( Figs 189–192 View FIGURES 189 – 190 View FIGURES 191 – 192 ) elongate, relatively stout and strongly convex, nearly black; BL 1.55 mm.

Head ( Figs 189–192 View FIGURES 189 – 190 View FIGURES 191 – 192 ) broadest at eyes, HL 0.30 mm; shape of vertex and frons difficult to assess but both convex ( Fig. 192 View FIGURES 191 – 192 ); tempora seem about as long as eyes or slightly longer ( Fig. 192 View FIGURES 191 – 192 ). Punctures and setae on frons and vertex poorly visible, setae seem sparse and suberect ( Fig. 192 View FIGURES 191 – 192 ), tempora ( Fig. 192 View FIGURES 191 – 192 ; tm) covered with sparse thick bristles. Antennae ( Figs 189–192 View FIGURES 189 – 190 View FIGURES 191 – 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 View FIGURES 189 – 190 View FIGURES 191 – 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 View FIGURES 191 – 192 ; slc) and one (inner) pair of antebasal pits ( Fig. 192 View FIGURES 191 – 192 ; abp). Punctures on pronotal disc ( Figs 191–192 View FIGURES 191 – 192 ) small but distinct, separated by spaces 3–4 times as wide as diameters of punctures; setae ( Figs 101–192 View FIGURES 99 – 102 View FIGURES 103 – 105 View FIGURES 106 – 107 View FIGURES 108 – 111 View FIGURES 112 – 114 View FIGURES 115 – 117 View FIGURES 118 – 119 View FIGURES 120 – 122 View FIGURES 123 – 125 View FIGURES 126 – 129 View FIGURES 130 – 134 View FIGURES 135 – 138 View FIGURES 139 – 144 View FIGURES 145 – 150 View FIGURES 151 – 154 View FIGURES 155 – 160 View FIGURES 161 – 164 View FIGURES 165 – 166 View FIGURES 167 – 170 View FIGURES 171 – 175 View FIGURES 176 – 179 View FIGURES 180 – 181 View FIGURES 182 – 185 View FIGURES 186 – 188 View FIGURES 189 – 190 View FIGURES 191 – 192 ) short, sparse, suberect; sides of pronotum with thick bristles.

Elytra ( Figs 189–192 View FIGURES 189 – 190 View FIGURES 191 – 192 ) elongate oval, strongly convex, EL 0.75 mm; punctures and setae similar to those on pronotum ( Figs 191–192 View FIGURES 191 – 192 ). Scutellum not visible between elytral bases.

Legs ( Figs 189–192 View FIGURES 189 – 190 View FIGURES 191 – 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.