Microscydmus

Jałoszyński, Paweł & Perkovsky, Evgeny, 2016, Diversity of Scydmaeninae (Coleoptera: Staphylinidae) in Upper Eocene Rovno amber, Zootaxa 4157 (1), pp. 1-85 : 68-69

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.5681847

persistent identifier

https://treatment.plazi.org/id/03A187A9-297A-FFB5-FF03-C0859F6AFEB4

treatment provided by

Plazi

scientific name

Microscydmus
status

 

? Microscydmus View in CoL sp. 2

( Figs 30 View FIGURES 21 – 34 , 204–208 View FIGURES 204 – 208 )

Material studied. Late Eocene of Europe , Rovno amber: sex unknown; inclusion in elongate, subtrapezoidal prism of amber 14 mm long ( Fig. 30 View FIGURES 21 – 34 ), collection number K-6943 ( SIZK).

Description. Body ( Figs 204–208 View FIGURES 204 – 208 ) elongate, moderately slender and convex, light brown; BL 0.73 mm.

Head ( Figs 204–208 View FIGURES 204 – 208 ) short and subhexagonal, broadest at eyes, HL 0.13 mm, HW 0.19 mm; vertex ( Fig. 207 View FIGURES 204 – 208 ; vt) and frons ( Fig. 207 View FIGURES 204 – 208 ; fr) confluent, weakly convex and together subhexagonal, strongly transverse; eyes large, oval, strongly convex; tempora in lateral view ( Fig. 208 View FIGURES 204 – 208 ) distinctly shorter than eyes. Punctures and setae on frons and vertex poorly visible. Antennae ( Figs 204–208 View FIGURES 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 View FIGURES 204 – 208 ) 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 View FIGURES 204 – 208 ) elongate oval, moderately convex, EL 0.40 mm, EW 0.30 mm, EI 1.33; punctures ( Fig. 208 View FIGURES 204 – 208 ) fine but discernible, separated by spaces 3–4 × as wide as diameters of punctures; setae ( Fig. 208 View FIGURES 204 – 208 ) sparse, short, suberect.

Legs ( Figs 205–206, 208 View FIGURES 204 – 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.

SIZK

Schmaulhausen Institute of Zoology

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

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