Groehnius, Bukejs & Legalov, 2019

Bukejs, Andris & Legalov, Andrei A., 2019, Groehnius, a new genus of Eugnomini (Coleoptera: Curculionidae) from Eocene Baltic amber, Fossil Record 22 (2), pp. 45-49 : 45-46

Genus Groehnius gen. nov.

urn:lsid:zoobank.org:act:32C41A65-20E9-40FEBE86-0281037EBC74

Type species

Groehnius electrum sp. nov., herein designated.

Etymology

The generic name is dedicated to Carsten Gröhn (Glinde, Germany), who provided the specimen for examination. Gender masculine.

Diagnosis

Body is elongated, densely covered with short recumbent setae; head prognathous; rostrum longer than pronotum, with geniculate antennae inserted in apical one-third; mandibles simple; antennal scrobes lateral, obliquely directed toward the rostrum base; eyes very large, convex; scape not reaching anterior margin of eye; pronotum distinctly narrower than elytra with constriction at anterior margin; precoxal portion of prothorax elongate; elytra elongate and with regular striae; abdominal ventrites 1 and 2 quite long, 3 and 4 short; femora and tibia subequal in length; femora swollen medially, without ventral teeth; tibiae without mucro or uncus, almost straight; claws free, simple, branched.

Comparison

The new genus is similar to the genus Archaeoeugnomus Legalov, 2016 from Baltic amber but differs in the femora without ventral teeth, and scape not reaching the anterior margin of the eye.

Remarks

Groehnius gen. nov. belongs to the tribe Eugnomini within Curculioninae based on the oblique antennal scrobes directed toward the rostrum base, antennae inserted close to the apex, very large eyes, and the tarsal claws free and branched.