A new species of the genus Dorytomus Germar, 1817 (Coleoptera: Curculionidae) from Baltic amber

A new species, Dorytomus groehni Bukejs & Legalov sp. n. is described and illustrated from Eocene Baltic amber. The new species differs from D. nudus Legalov, 2016 primarily in longer and wider body size, narrower and longer rostrum, slightly convex interstriae distinctly wider than elytral striae and finely punctate pronotum with semierect setae

First record of the tribe Naupactini (Coleoptera: Curculionidae) in Rovno amber

A new weevil, Arostropsis perkovskyi Bukejs and Legalov, sp. nov. (urn:lsid:zoobank.org:act:408ECE71-B191-4381-AA39-C27A3A1DA082; Coleoptera: Curculionidae: Entiminae), is described from Late Eocene Rovno amber. The new species differs from Arostropsis groehni Yunakov et Kirejtshuk, 2011 from Baltic amber in the pronotum lacking a distinct lateral ridge, it has a shorter rostrum, antennomere 2 is subequal to antennomere 3, it has wider elytra with weaker convex humeral calli and the pronotum is wider than it is long. It is the first record of the tribe Naupactini in Rovno amber and the second finding of Arostropsis in Eocene ambers

The first record of Rhynchitidae (Coleoptera) from Rovno amber

Based on a well-preserved specimen, Pseudomesauletes groehni sp. n. is described and illustrated from Upper Eocene Rovno amber (Ukraine). It is the first fossil record of Rhynchitidae from this Lagerstätte

Groehnius, a new genus of Eugnomini (Coleoptera: Curculionidae) from Eocene Baltic amber

A new weevil, Groehnius electrum Bukejs and Legalov, gen. et sp. nov. (Coleoptera: Curculionidae: Curculioninae), is described from Eocene Baltic amber. This new genus is similar to the genus Archaeoeugnomus Legalov, 2016 from Baltic amber but differs in the femora without ventral teeth, and the scape not reaching the anterior margin of the eye. It is the second record of the tribe Eugnomini in the Eocene

Two new species of the family Rhynchitidae (Coleoptera: Curculionoidea) from Eocene Baltic amber, with key to species and assumed trophic relationships

Two new fossil species of Baltocar Kuschel, 1992 and Pseudomesauletes Legalov, 2001 (Curculionoidea: Rhynchitidae) are described from Eocene Baltic amber. Baltocar sontagae sp. nov. is similar to B. groehni Riedel, 2012 but differs in the shorter rostrum, tarsomere 1 shorter than tarsomere 5 and 1.4× as long as tarsomere 2, longer elytra, and shorter body. Pseudomesauletes lobanovi sp. nov. is similar to P. culex (Scudder, 1893) and P. ibis (Wickham, 1912): the new species differs from P. culex in the larger eyes, longer pronotum, being 0.44× shorter than elytra, and slightly smaller body size; from P. ibis it differs in the smaller body size, rostrum shorter than elytra, and weakly convex pronotum. This is the first record of Pseudomesauletes from Baltic amber and the sixth species of Baltocar. Keys to species of the genus Baltocar and to the Eocene species of the genus Pseudomesauletes are given. Assumed trophic relationships of these fossil taxa are discussed (urn:lsid:zoobank.org:pub:260EBE6E-DA6C-4D6DA1D2-2C258224622F). parts of the plant, usually gnawed by the female (Legalov, 2004). Thirty-five species were found in the fossil record (Legalov, 2015b; Bukejs and Legalov, 2019; Kania and Legalov, 2019). The earliest Rhynchitidae are known from the Cenomanian of Botswana and the Turonian New Jersey amber (Gratshev and Zherikhin, 2000; Legalov, 2015b). They are found in the Paleocene of France (Legalov, 2020b), the Eocene of the USA and Europe (Legalov, 2015b, 2020b), the Oligocene of Europe (Legalov, 2020b), the Miocene of Germany (Heer, 1847), and also Dominican and Mexican amber (Poinar and Brown, 2007; Poinar and Legalov, 2015). Nine rhynchitid species are described from Eocene Baltic amber (Voss, 1953; Legalov, 2012, 2013, 2015b, 2020a, b; Riedel et al., 2012; Kania and Legalov, 2019). The extinct genus Baltocar Kuschel, 1992 includes five species (Riedel et al., 2012; Legalov, 2015b, 2020a). A new species of this genus is discovered in examined Baltic amber material. The fossil species of the genus Pseudomesauletes Legalov, 2001 were known from Rovno amber (Bukejs and Legalov, 2019) and Florissant (Legalov, 2015b). A newly described species is the first record of this genus from the Baltic amber

A new species of Xyletinus Latreille, 1809 (Coleoptera: Ptinidae: Xyletininae) from Eocene Baltic amber, with a key to known fossil species

A new extinct species of the genus Xyletinus Latreille, 1809, namely X. (s. str.) lobanovi sp. n., is described and illustrated from Eocene Baltic amber. This new extinct species resembles X. carsteni Háva et Zahradník, 2020 but differs from it in the dull, not shiny pronotum and elytra, uniformly rufous body and appendages and the lesser body size. A new species is close to X. arturi Háva et Zahradník, 2019, but can be distinguished in the lesser body size, flat elytral intervals and the widest in anterior one-third pronotum. A key to fossil species of Xyletinus is provided. Additionally, new fossil records for Ernobius nadravicus Alekseev, 2014 and Xyletinus arturi Háva et Zahradník, 2019 are presented

The first record of Brentidae (Coleoptera) in Eocene Rovno amber with description of a new fossil species of <i>Toxorhynchus</i> Scudder, 1893

A new pear-shaped weevil, Toxorhynchus europeoeocenicus Bukejs et Legalov, sp. nov. (Coleoptera: Brentidae: Apioninae), is described from upper Eocene Rovno amber using X-ray microcomputed tomography (µCT). The new fossil species differs from the extinct Toxorhynchus robustus Poinar et Legalov, 2015 (Dominican amber, lower Miocene) in the larger body size, narrower elytral striae, and wider pronotum. It is the first record of the family Brentidae in Rovno amber and the first record of the genus Toxorhynchus in the eastern hemisphere (urn:lsid:zoobank.org:pub:8FB7B299-EE75-4556-B4EA-203A3CBED84C).</p

First record of the tribe Naupactini (Coleoptera: Curculionidae) in Rovno amber

A new weevil, Arostropsis perkovskyi Bukejs and Legalov, sp. nov. (urn:lsid:zoobank.org:act:408ECE71-B191-4381-AA39-C27A3A1DA082; Coleoptera: Curculionidae: Entiminae), is described from Late Eocene Rovno amber. The new species differs from Arostropsis groehni Yunakov et Kirejtshuk, 2011 from Baltic amber in the pronotum lacking a distinct lateral ridge, it has a shorter rostrum, antennomere 2 is subequal to antennomere 3, it has wider elytra with weaker convex humeral calli and the pronotum is wider than it is long. It is the first record of the tribe Naupactini in Rovno amber and the second finding of Arostropsis in Eocene ambers.</p

A new Eocene <i>Bacanius</i> species (Histeridae: Dendrophilinae) from Baltic amber

A study of Baltic amber revealed a new fossil species of the genus Bacanius LeConte, 1853. Bacanius gorskii sp. nov. differs from the congener described previously from Eocene Rovno amber, B. kirejtshuki Sokolov and Perkovsky, in the shape of meso-metaventral suture, incomplete subhumeral stria, and the impunctate prosternal lobe (urn:lsid:zoobank.org:pub:EE9C6859-607A-4134-9037-8385601CF42F).</p

The second fossil species of <i>Cathartosilvanus</i> (Coleoptera: Cucujoidea: Silvanidae) from Eocene Baltic amber

A new fossil species of the silvanid flat bark beetle genus Cathartosilvanus Grouvelle is described and illustrated from Baltic amber. Cathartosilvanus siteiterralevis sp. nov. differs from recent and fossil congeners in the distinct, sharp denticle found along its posterior pronotal angle. The phenomenon of specific body parts becoming disconnected, and the compression of specimens is briefly discussed and interpreted in the context of amber taphonomy. The specimen under study appears to be an uncommon case of a weakly sclerotized beetle imago becoming entrapped in resin shortly after moulting.</p