Glesoconomorphus, Alekseev & Pollock & Bukejs, 2019

Alekseev, Vitalii I., Pollock, Darren A. & Bukejs, Andris, 2019, Two new fossil representatives of Eurypinae (Coleoptera: Tenebrionoidea: Mycteridae) from Eocene Baltic amber and placement of Neopolypria nigra Abdullah, 1964, Zootaxa 4551 (1), pp. 67-78 : 68-69

Genus Glesoconomorphus gen. nov.

Type species: Glesoconomorphus nachzehrer sp. nov.

Diagnosis. Glesoconomorphus gen. nov. can be differentiated from all extant Eurypinae by the following combination of characters: ocular groove distinct; eye without intrafacetal setae; head without frontal furrows; eyes protuberant, non-emarginate; lateral carina of pronotum absent; frontoclypeal suture not indicated; body dorsal surface evenly punctate and setose. Within Eurypinae , Glesoconomorphus gen. nov. resembles the New World Conomorphus Champion, 1889 and Stilpnonotus Gray, 1832 , sharing a distinct, fine ocular groove, narrowly separated from the eyes (Pollock 2016). The new genus can be distinguished from Silpnonotus by the dorsal body surface with conspicuous setation and from Conomorphus by the non parallel-sided elytra, which are widest posteriorly. Glesoconomorphus gen. nov. can be additionally distinguished from both above mentioned genera by its distinctly smaller and comparatively wider body.

The new fossil genus differs from Bertinotus Kirejtshuk & Nel, 2009 in the presence of paramedian depressions at pronotal base, lateral pronotal carinae not distinct in distal half, and distinctly punctate head. Glesoconomorphus gen. nov. differs from Neopolypria Abdullah, 1964 in the uniform setation of the body, nonemarginate eyes, and pronotum without lateral carina.

Three common characters of Eurypinae were not observed in Glesoconomorphus gen. nov.: (1) male abdominal setal patch (sex of holotype is unknown), (2) closure of procoxal cavities, (3) apicoventral binding patch on each elytron.

Etymology. The name of the new genus is a compound word and combines “ glesum ” (Latin word for amber) and “ Conomorphus ” (name of the similar recent Neotropical eurypine genus). Gender masculine.

Remarks. The new genus is monotypic, represented by the type species only. Therefore the generic description considerably overlaps that of the species.