Rovnoleptochromus ableptonoides, Jałoszyński, Paweł & Perkovsky, Evgeny, 2016

Jałoszyński, Paweł & Perkovsky, Evgeny, 2016, Diversity of Scydmaeninae (Coleoptera: Staphylinidae) in Upper Eocene Rovno amber, Zootaxa 4157 (1), pp. 1-85 : 16-17

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.5681733
persistent identifier	https://treatment.plazi.org/id/03A187A9-2936-FFE1-FF03-C5B59C83FE7C
treatment provided by	Plazi
scientific name	Rovnoleptochromus ableptonoides
status	sp. nov.

Treatment

† Rovnoleptochromus ableptonoides View in CoL sp. n.

( Figs 1 View FIGURES 1 – 20 , 39–48 View FIGURES 39 – 43 View FIGURES 44 – 45 View FIGURES 46 – 48 )

Type material. Holotype: Late Eocene of Europe , Rovno amber: sex unknown; inclusion in elongate, L-shaped piece of amber 17 mm long ( Fig. 1 View FIGURES 1 – 20 ), collection number K-27418 ( SIZK).

Diagnosis. This is the only species of Rovnoleptochromus and can be identified on the basis of the generic diagnosis.

Description. Body ( Figs 39–42 View FIGURES 39 – 43 , 44–45 View FIGURES 44 – 45 , 47–48 View FIGURES 46 – 48 ) strongly elongate and flatten, dark brown; BL 2.10 mm.

Head ( Figs 43 View FIGURES 39 – 43 , 46, 48 View FIGURES 46 – 48 ) broadest at large eyes, HL 0.35 mm, HW 0.38 mm; vertex and frons seem confluent (but dorsally poorly visible); tempora longer than eyes; supraantennal tubercles indistinct. Punctures on head unclear, setae only partly visible ( Fig. 46 View FIGURES 46 – 48 ), sparse, moderately long and erect. Antennae ( Figs 39–46, 48 View FIGURES 39 – 43 View FIGURES 44 – 45 View FIGURES 46 – 48 ) long and slender, AnL about 0.98 mm, scape longer than antennomeres II–IV combined, pedicel less than half as long as scape, distinctly longer than antennomere III, all antennomeres elongate, flagellomeres sparsely covered with very long and suberect setae ( Figs 44 View FIGURES 44 – 45 , 46 View FIGURES 46 – 48 ).

Pronotum ( Figs 41 View FIGURES 39 – 43 , 47 View FIGURES 46 – 48 ) partly distorted; PL 0.53 mm, PW 0.44 mm; pronotal disc broadest near anterior fifth and strongly narrowing posteriorly; anterior pronotal margin broadly rounded, laterally confluent with lateral margins, sides strongly rounded in anterior third, subparallel in posterior third. Punctures on disc ( Fig. 47 View FIGURES 46 – 48 ) small but distinct, separated by spaces about as wide as two diameters of puncture; setae ( Fig. 47 View FIGURES 46 – 48 ) sparse, short and suberect.

Elytra ( Figs 39–41 View FIGURES 39 – 43 , 44–45 View FIGURES 44 – 45 , 47 View FIGURES 46 – 48 ) elongate oval, strongly flattened; EL 1,23 mm, EW 0.50 mm, EI 2.45; humeri weakly marked, sides of elytra nearly parallel in anterior third, weakly convergent posteriorly behind middle, rounded at apices; dorsal rows of pits distinct and deep, intervals between striae with 2–3 irregular rows of short suberect setae ( Figs 44 View FIGURES 44 – 45 , 47 View FIGURES 46 – 48 ). Hind wings present.

Legs ( Figs 39–40, 42 View FIGURES 39 – 43 , 44–45 View FIGURES 44 – 45 , 48 View FIGURES 46 – 48 ) long and slender.

Etymology. The name ableptonoides was chosen to underline the significance of the median metaventral longitudinal carina, a character that Rovnoleptochromus shares with Ablepton and for the first time found in another genus of Mastigitae.