Damzenium rivnense Kazantsev et Bocak, 2022

Kazantsev, Sergey V. & Bocak, Ladislav, 2022, New genus of erotine net-winged beetles, Damzenium gen. nov. (Coleoptera: Lycidae), from Eocene Rovno amber, Zootaxa 5154 (5), pp. 583-589 : 586

Damzenium rivnense Kazantsev et Bocak sp. nov.

( Figs 1A–F )

Material. Holotype ♂, specimen No. MAIG-6827 (Museum of Amber Inclusions, Gdansk ), ex coll. J. Damzen (Vilnius) JDC-10268R, Rovno amber, late Eocene.

Description. Male. Dark brown ( Figs 1A–F ).

Eyes slightly bulging, relatively small, interocular dorsal distance ca. 1.8 times greater than eye radius. Ultimate maxillary and labial palpomeres larger than preceding palpomeres, slightly widened distally. Antennae barely reaching over the elytral middle, ratio of lengths of antennomeres 2–7 3: 8: 8: 7: 7: 7 ( Figs 1A, 1F ).

Pronotum transverse, about twice as wide as long, with conspicuous obtuse anterior and pronounced acute posterior angles; median crest well developed in anterior half and nearly obsolete posteriad of the crossline; transverse carinae narrow, distinctly reaching median ridge. Scutellum slightly wider than long, without incision at apex ( Figs 1A–C ).

Elytra flattened, elongate, ca. 3.6 times as long as wide at humeri, parallel-sided; interstices 1-3 with even double rows of small roundish cells ( Figs 1A–F ).

Tarsomere length ratio (of tarsomeres 1–4) 5.3: 2.3: 1.9: 1 ( Figs 1A, F ).

Length (from anterior head margin to end of elytra) 5.7 mm; width at humeri 1.9 mm, pronotal width at base 1.8 mm, pronotal length at midline 0.92 mm.

Syninclusions. None.

Etymology. Damzenium rivnense sp. nov. is named after the region where the amber specimen was discovered (‘Rivne’, the Ukrainian for ‘Rovno’).

Diagnosis. The new species is a single species in the genus and may be distinguished from other erotines, including those known from amber, by the generic characters.

Figures

FIGURE 1. Damzenium rivnense gen. et sp. nov. A—general appearance, dorsal view, B, C—pronotum and humeral part of the elytra, D, E—posterior and humeral part of the right elytron; F—general appearance, lateral view. Scales 0.5 mm.