Andris Bukejs

Daugavpils University · Institute of Life Sciences and Technologies

A new extinct genus of the tribe Hedobiini (Coleoptera: Ptinidae) from Baltic amber Vitalii Alekseev, Andris Bukejs Alekseev V., Bukejs A. 2024. A new extinct genus of the tribe Hedobiini (Coleoptera: Ptinidae) from Baltic amber. Baltic J. Coleopterol., 24(2): 223-230. A new extinct monotypic genus of Ptinidae, Carstenium kensbargense gen. et sp. n...

One new extinct genus and six new extinct species of Zopheridae are described and illustrated from Eocene Baltic amber: Usechus andrushchenkoi Alekseev et Bukejs sp. nov., Coxelus carstengroehni Alekseev et Bukejs sp. nov., Paha vanivanitatum Alekseev et Bukejs sp. nov., Lasconotus tenebrisilvarum Alekseev et Bukejs sp. nov., Helioctamenus groehni...

Altogether, 33 fossils of Chrysomelidae in species rank have been described from Baltic amber to date and assigned to nine subfamilies (e.g. Uhmann, 1939; Bukejs & Nadein, 2013, 2015; Bukejs, 2014, 2019; Biondi, 2014; Bukejs & Bezděk, 2014; Bukejs & Chamorro, 2015; Bukejs et al., 2023a; Bukejs & Schmitt, 2016; Legalov, 2016). Eumolpinae are represe...

The first extinct Paleogene species of the Anobiinae genus Nicobium LeConte, 1861 is described based on an inclusion in Baltic amber. Two characteristic features distinguishing the extinct species (among other characters present in one combination or another in extant species) are sparse, inconspicuous elytral pubescence and rectangular, sharp post...

Fossil Corylophidae are poorly known. Three fossil representatives of the family were described until now: one from mid-Cretaceous (Mesozoic) and two from Eocene (Cenozoic) deposits. We revise corylophid material from Baltic amber using X-ray micro-computed tomography (lCT) and describe two new species: Clypastraea venedorum n. sp. and C. groehni n...

Based on an inclusion in Bitterfeld amber, the first extinct species of the subfamily Agnathinae (Pyrochroidae) is described and illustrated. Agnathus groehni sp. nov. differs from two extant congeners in having the smaller body size; transverse W-shaped groove near posterior pronotal margin; the unicolourous black body and the elytral pubescence u...

Based on inclusions in Eocene Baltic amber, two new fossil species of the family Cantharidae, namely Podosilis groehni sp. nov. (the second fossil species of the genus) and Silis (Silis) carsteni sp. nov., are described and illustrated. These new species are compared with the other known taxa of both genera from various amber deposits.

Based on a well-preserved inclusion in Eocene Baltic amber (Kaliningrad region), Eocenobius praestigitator gen. et sp. nov. is described and illustrated as new to science. A key to species of the subfamily Ernobiinae of Baltic amber (10 species in 5 genera) is provided.

Based on a well-preserved specimen in Eocene Baltic amber, a new species Globicornis samlandensis sp. nov. (Coleoptera: Dermestidae) is described and illustrated. The new fossil species differs from extinct congeners in having antennomere 10 short and subtriangular with a rounded apex, and about as long as wide; while the pronotum and elytra are un...

Based on an inclusion in Baltic amber, the first extinct species of the genus Hyperisus Mulsant and Rey, 1863 (Ptinidae: Ernobiinae: Xestobiini), namely H. carstengroehni sp. nov. is described. This new fossil Eocene species differs from extant European congeners in having the dorsal pubescence of two types; the lesser body size; the abdominal vent...

A new species of silvanid flat bark beetle, Nausibius radchenkoi sp. nov., is described and illustrated based on a well-preserved inclusion in Eocene Rovno amber. It is the first fossil species of Nausibius, a cosmopolitan genus with representatives living worldwide today. The current finding confirms both the Eocene age of the genus and the presen...

Based on well-preserved specimen in Eocene Baltic amber, Atomaria (Anchicera) propinqua sp. nov. is described and illustrated. It is the sixth fossil species of Atomaria Stephens, 1829 reported from fossil resins. In addition, a new fossil record of A. (Anchicera) alekseevi Lyubarsky et Bukejs, 2022 from Baltic amber is presented.

A new malachite beetle, Baltamauroania mirabilicornis gen. et sp. nov., belonging to the tribe Amauroniodini (Coleoptera: Dasytidae) embedded in Eocene Baltic amber is described and illustrated. The new genus differs from the congeners of the tribe Amauroniodini in possessing a black, elongated, and subparallel body and a pronotum with scalloped la...

Two new extinct species of false skin beetles (Biphyllidae) are described and illustrated based on inclusions in Baltic amber: Biphyllus lar sp. nov. and Coelodiplus uuu-impressa gen. et sp. nov. The new Eocene fossils are compared with the related extant and extinct representatives of the family. A new monotypic genus is erected for one fossil; an...

A new malachite beetle, Baltamauroania mirabilicornis gen. et sp. nov., belonging to the tribe Am-auroniodini (Coleoptera: Dasytidae) embedded in Eocene Baltic amber is described and illustrated. The new genus differs from the congeners of the tribe Amauroniodini in possessing a black, elongate and subparallel body and a pronotum with scalloped lat...

A new species of the genus Cartorhynchites (Rhynchitini, Rhynchitina) is described from Baltic amber. Cartorhynchites groehni Legalov, Bukejs et Alekseev sp. n. differs from C. struvei Zherikhin, 1992 from the Miocene of Germany in its smaller body size (2.6 mm), strongly convex eyes, narrower pronotum and wide elytra, and dark brown legs. A new sp...

A new extinct species of the genus Europs Wollaston, 1854, E. groehni sp. nov. is described and illustrated based on one well-preserved inclusion in Baltic amber. This second Palaeogene species of the genus can be distinguished by the shape of antennomere 9; by the rectangular, rounded temples; by the presence of dorsal microreticulation; and by th...

Based on a single specimen in Eocene Baltic amber, Henoticus groehni sp. nov., the first extinct species of the genus, is described. The new species is studied and illustrated in detail using optical microphotography and X-ray micro-computed tomography. An additional congeneric specimen is discussed but not attributed to the species level. It is sh...

Based on a single specimen from Eocene Baltic amber, Donacia (Protodonacia) bienkowskii subgen. et sp. nov. is described and illustrated. The new species is studied and illustrated in detail using X-ray microcomputed tomography (μCT). It is the first described species of Donaciinae (Coleoptera: Chrysomelidae) from Baltic amber and from fossil resin...

This study details the quality of preservation of amber deposits in the Eocene. Through Baltic amber crack-out studies using Synchrotron Micro-Computed Tomography and Scanning Electron Microscopy it was found that the cuticle of a specimen of leaf beetle (Crepidodera tertiotertiaria (Alticini: Galerucinae: Chrysomelidae)) is exceptionally well pres...

Melipriopsis baltica sp. nov. is described and illustrated from the Eocene Baltic amber. The described holotype (female) of this species has the fully exposed ovipositor with characters similar (general outline, configuration of lobes of the gonocoxites, and disposition of styli) to those in the extant members of the subfamily Meligethinae.

Based on a well-preserved specimen from Eocene Baltic amber, female of Revelieria groehni Sergi, Perkovsky et Reike, 2013 (Coleoptera: Latridiidae) is described and illustrated using X-ray micro-computed tomography (mCT). The sexual dimorphic characters of this species are briefly discussed.

This study details the quality of organic preservation of amber deposits in the Eocene. Through Baltic amber crack-out studies using Synchrotron Micro-Computed Tomography and Scanning Electron Microscopy it was found that the cuticle of a specimen of leaf beetle (Crepidodera tertiotertiaria) (Alticini: Galerucinae: Chrysomelidae)) is exceptionally...

The beetle family Ptilodactylidae is recorded for the first time from Rovno amber, Ukraine. Ptilodactyla odnosum Telnov, Perkovsky, Kundrata and Bukejs sp. nov. and a male of P. eocenica Kundrata, Bukejs and Blank, 2021 are described and illustrated using X-ray micro-computed tomography. Our discoveries of two species in Rovno amber together with r...

Fossil silvanid flat bark beetles (Insecta: Coleoptera: Silvanidae) are briefly reviwed.

Two new extinct species of the genus Atomaria Stephens, 1829 are described and illustrated: A. (Anchicera) alekseevi sp. nov. from Baltic amber and A. (Anchicera) perkovskyi sp. nov. from Rovno amber. A key to extinct Eocene species of Atomaria is provided.

A new extinct handsome fungus beetle species of the extant Palaearctic genus Leiestes Chevrolat, L. tomaszewskae Alekseev and Bukejs sp. nov., is described from the Baltic amber. The new species is studied and illustrated in detail using X-ray micro-computed tomography (μCT). A list of described Endomychidae known from fossil resins (Baltic, Bitter...

A new genus and species of Eumolpinae, Eocenocolaspis aurichalceus gen. et sp. nov, is described and figured from the Eocene Baltic amber. This fossil taxon belongs to the group of Colaspis-like genera, and it is compared with related extant South American and Australian eumolpines. The studied inclusion possesses iridescent metallic colouration, r...

A new extinct handsome fungus beetle species of the extant Palaearctic genus Leiestes Chevrolat, L. tomaszewskae Alekseev and Bukejs sp. nov., is described from the Baltic amber. The new species is studied and illustrated in detail using X-ray micro-computed tomography (μCT). A list of described Endomychidae known from fossil resins (Baltic, Bitter...

Based on well-preserved specimen in Baltic amber (the Kaliningrad Region, Russia), a new polypore fungus beetle of the extant Holarctic genus Eustrophus Illiger, E. praecursor sp. nov. is described and illustrated. It is the first described Cenozoic member of the subfamily Eustrophinae. This fossil record expands the diversity of Tetratomidae known...

The false darkling beetle genus Wanachia Schulze, 1912 is recorded from Baltic amber for the first time. The new extinct species, Wanachia pinisucciniferae sp. nov., is described and compared with extant congeners. The occurrence of this Trichaptum-associated genus in Baltic amber can indirectly indicate the presence of these fungi (Agaricomycetes:...

Austronausibius aenigmatista sp. nov., the first fossil silvanid beetle belonging to the Recent genus Austronausibius Halstead distributed in Australia and southern South America, is described from late Eocene Rovno amber. The new fossil species is illustrated and compared with related extant and morphologically close extinct taxa. A key to species...

Based on a single adult male specimen from Eocene Baltic amber, Isorhipis muonai sp. nov. is described and illustrated. The description of the new fossil and comparison with extinct and extant congeners is accompanied by a brief discussion on the possible climate and habitat preferences of the species.

A new genus and species of Monotomidae, Rovnoeurops mckellari gen. et sp. nov., placed in the tribe Europini, is described and figured from Late Eocene Rovno amber. An extinct monotomid genus is documented in Cenozoic amber for the first time. Rovnoeurops gen. nov. can be distinguished from 27 extant genera of Europini by the combination of the fol...

A new extinct erotylid species of the extant Western Palaearctic genus Zavaljus Reitter, Z. lyubarskyi sp. nov., is described from Rovno amber. This fossil species represents the first report of this genus of the subfamily Xenoscelinae from the Eocene and the second known member of the genus. The new species is illustrated and compared with related...

Data on the Passandridae collection of the Natural History Museum (London, United Kingdom), including type specimens of 50 names, of them 29 valid and 21 invalid, are presented. The type status of several specimens is clarified. Images of type and other significicant specimens are provided for 55 taxa, mainly for the first time. The history of the...

Archostematan species Cupes groehni Kirejtshuk, 2005 is recorded from Upper Eocene Rovno amber. It is the first record of the family Cupedidae from this Lagerstätte and the ninth coleopteran species common to Baltic and Rovno ambers. Specimen is examined and illustrated using X-ray micro-computed tomography (μCT).

A new species of comb-clawed beetles of the genus Asiomira Dubrovina, 1973 (A. dubrovinae sp. n.) is described from the Eocene Baltic amber. This newly descovered fossil species displays typical generic characters and is the most similar to the extant Asiomira ophtalmica (Seidlitz, 1896). Both species share a similar shape of the pronotum and the f...

The genus Passandrella Grouvelle, 1916 and the species P. visenda Grouvelle, 1916 are recorded for the first time from Peru. Two specimens were collected in Nauta, Peru. The general information on the species and photographs of the habitus and aedeagus are given.

Teredolaemus primigenius sp. nov. represents the first occurrence of Teredidae in Eocene Baltic amber and is the first documented fossil record of the family. The described and illustrated species is also the first formally described West Palaearctic member of the genus, extending the temporal range of the group into the Eocene (48–34 Ma). The glob...

Based on a well-preserved specimen from Eocene Baltic amber, the second species of extinct Aberrokorynetes is described and illustrated using X-ray micro-computed tomography. Three-dimensional models reconstructed from μCT data were used to assist in the description of Aberrokorynetes oceanojubilaei sp. nov. (Cleridae: Korynetinae). The extinct gen...

A new fossil species of the silvanid flat bark beetle genus Cathartosilvanus Grouvelle is described and illustrated from Upper Eocene Rovno amber. Cathartosilvanus perkovskyi sp. nov. resembles extant C. opaculus (LeConte, 1854) and differs from extinct congeners from Baltic amber in pronotal lateral sides crenulate, pronotum as long as wide, and e...

Two fossil species of the tribe Petaliini tentatively assigned to the extant American genus Petalium LeConte, P. bruteno sp. nov. and P. widewuto sp. nov., are described from Baltic amber. The data illustrates and indicates the presence of the tribe in the amberiferous forests that once occupied the territories of the eastern Baltic region and thus...

Based on material originating from five amber collections of Eocene Baltic amber, Protostomopsis pandema gen. et sp. nov. is described and illustrated using X-ray micro-computed tomography. It is the first formally described extinct species of Cerylonidae, and the first known Palaearctic representative of the subfamily Ostomopsinae. As such, the ne...

The beetle family Ptilodactylidae contains more than 500 extant species; however, its fossil record is scarce and remains understudied. In this study, we describe a new species of Ptilodactylidae, Ptilodactyla eocenica Kundrata, Bukejs and Blank, sp. nov., based on a relatively well‐preserved specimen from Baltic amber. We use X‐ray microcomputed t...

In the current paper, 26 beetles species, Hydrovatus cuspidatus (Kunze, 1818), Platylomalus complanatus (Panzer, 1797), Hydrochus ignicollis Motschulsky, 1860, Potamophilus acuminatus (Fabricius, 1792), Agrilus suvorovi Obenberger, 1935, Hylis cariniceps (Reitter, 1902), H. olexai (Palm, 1955), Caenoscelis fleischeri Reitter, 1889, Abdera affinis (...

The description of an extinct species of Metaclisa Jacquelin du Val, 1861 (Tenebrionidae) is presented. This genus and the tribe Metaclisini are recorded as fossils for the first time, from Eocene Baltic amber. The new species Metaclisa ottoi sp. nov. belongs to the subgenus Trichometaclisa subgen. nov. and differs from all other Metaclisini in pos...

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...

Acritus sutirca sp. nov. is described and illustrated from Eocene Baltic amber on the basis of one adult male specimen. As the first extinct member of the subfamily Abraeinae (Histeridae) and the smallest known fossil histerid specimen, this material was examined using a combination of light microscopy and X-ray micro-computed tomography (µCT). Int...

Based on a well preserved female specimen from Bitterfeld amber, Monolepta rappsilberi sp. nov. is described and illustrated using X-ray micro-computed tomography (μCT). It is the second reported member of Chrysomelidae from this fossil resin and the first described fossil Monolepta representative. The fossil species represents a lineage that is ex...

Dascillidae are a species-poor beetle group with a scarce fossil record. Here, we describe Baltodascillus serraticornis gen. et sp. nov. based on a well-preserved specimen from Eocene Baltic amber. It differs from all known Dascillidae by its reduced mandibles. After studying the specimen using light microscopy and X-ray microtomography, we tentati...

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 short...

Six new extinct representatives of the family Melandryidae, namely Electroxylita chronographica gen. et sp. nov., Madelinia capillata sp. nov., Microscapha kugelanni sp. nov., Phloiotrya inmarinata sp. nov., Symphora pollocki sp. nov., and S. glaesonauta sp. nov. are described from inclusions in Eocene Baltic amber. Twenty-eight additional fossil s...

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....

The subfamily Aneurinae of the flat bug family Aradidae (Hemiptera: Heteroptera) contains about 150 extant species assigned to seven genera, and seven fossil species of which six were described from Eocene Baltic amber and one from Cretaceous Burmese amber. A new species Aneurus damzeni sp. nov. from Baltic amber is described and illustrated using...

Based on a single well-preserved specimen from Eocene Baltic amber, a new comb-clawed beetle Isomira lobanovi sp. n. (Alleculinae: Alleculini: Gonoderina) is described and illustrated. The new species belongs to the subgenus Mucheimira Novák, 2016, with extant species distributed in South China, Himalaya and the south of Arabian Peninsula. Isomira...

Chelonariidae, or turtle beetles, are rarely represented in the fossil record. Two new extinct species of this thermophilous coleopteran family, Chelonarium andabata Alekseev and Bukejs sp. nov. and Ch. dingansich Alekseev and Bukejs sp. nov., are described and illustrated from Eocene Baltic amber using X-ray micro-computed tomography (micro-CT). T...

A new species and genus of polypore fungus beetle, Elasontagius dorbnickensis gen. et sp. nov., is described and illustrated, representing the second formally described species of Tetratomidae from Eocene Baltic amber. This new extinct polypore fungus beetle belongs to the subfamily Hallomeninae and clearly differs from other representatives in abs...

Beetle fossils are a rich source of information about the palaeodiversity and evolutionary history of the order Coleoptera. Despite the increasing rate of fossil research on click-beetles (Coleoptera: Elateridae), the most diverse group in the superfamily Elateroidea, their fossil record has remained largely unstudied. This may be caused by the com...

Based on a well-preserved specimen from Eocene Baltic amber, Groehnaltica batophiloides gen. nov. and sp. nov. (Coleoptera: Chrysomelidae: Galerucinae: Alticini) is described and illustrated using X-ray micro-computed tomography (μCT). The new monotypic genus is compared with fossil and extant flea-beetle genera. In the extant Eurasian fauna Groehn...

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 bo...

Europoeurypus inglaeso gen. et sp. nov. is described from Eocene Baltic amber found on the Sambian Peninsula, Kaliningrad Region, Russia. Four additional specimens of mycterid beetles from collections of Baltic amber are reported. The secondary sexual characters and sexual dimorphism in the Eocene representatives of the genus Omineus Lewis, 1895 ar...

A male representative of the extinct species Calomicrus eocenicus Bukejs et Bezděk, 2014 (Chrysomelidae: Galerucinae) is found and described for the first time from Eocene Baltic amber using X-ray microtomography. The aedeagus is well preserved within the body cavity of the specimen, and it is illustrated in detail. This fossil species exhibits dis...

Based on two specimens originating from Eocene Rovno and Baltic ambers, Attagenus (Aethriostoma) gedanicissimus sp. nov. is described, illustrated and compared with the related fossil Mesozoic species A. (Aethriostoma) turonianensis Peris et Háva, 2016. The common beetle species for Baltic and Rovno ambers suggests the exceptional temporal and geog...

A new species of Mycetophagidae belonging to the genus Litargus, namely L. (Litargosomus) dantiscensis Alekseev, Kupryjanowicz et Bukejs sp. nov., is described and figured from Eocene Baltic amber using X-ray micro-computed tomography (μCT). Three additional specimens of a mycetophagid beetle that is rather common in Baltic amber, Crowsonium succin...

Based on a single well-preserved specimen from Eocene Baltic amber, a new tenebrionid beetle Neomida groehni Nabozhenko et Bukejs sp. nov. (Diaperinae: Diaperini) is described and illustrated using phase-contrast X-ray microtomography. This oldest representative of the genus differs from all known extant and extinct congeners by the dorsally very w...

Based on a well-preserved specimen from Eocene Baltic amber, a new weevil – Baltacalles triumurbium gen. et sp. nov. – is described and illustrated. The new fossil genus is similar to the extant Acalles Schoenherr, 1825 but differs from it in the denticulate femora, abdominal ventrites 1–2 combined about 2.8 times as long as ventrites 3–4 combined,...

The first fossil representative of Eledonoprius Reitter, E. incoronatus sp. nov., is described from Eocene Baltic amber. The genus is associated with old-growth forests in the modern Western Palaearctic Region and apparently has persistent in this Region since the Paleogene.

A new fossil species of the silvanid flat bark beetle, Airaphilus simulacrum Alekseev, Bukejs et McKellar sp. nov. (Coleoptera: Silvanidae) is illustrated and described based on two specimens from Eocene Baltic amber. A second specimen of the confamilial fossil taxon Mistran ot Alekseev et Bukejs, 2016 is reported and imaged using synchrotron X-ray...

In the current paper, information on Passandridae from the Philippines is summarized. Faunal data on six species are presented. Two species of them, Passandra rufipennis (Fabricius, 1801) and P. semifusca (Newman, 1839) are mentioned for the first time for local fauna. A checklist of the Philippine Passandridae is compiled. In total, 12 species bel...

Anew 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.

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.

Passandra barsevskisi sp. nov. (Coleoptera: Passandridae) is described and illustrated from Borneo and the Philippines. The new species can be distinguished from all known species of Passandra by the following combination of features: head, pronotum and elytra black; antennomeres 3-10 with narrow groove ventrally, male antennae robust with antennom...

The Mycetophagidae (hairy fungus beetles) and Tetratomidae (polypore fungus beetles) of the Kaliningrad Region (Russia) are reviewed. Nine species in the genus Mycetophagus, two species in Tetratoma and Hallomenus, and single species Litargus, Triphyllus, Typhaea and Eustrophus are known in the region. Distributional records of the studied beetles...

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 disconnecte...

Statira baltica sp. nov. is described from Eocene Baltic amber found in the Baltic Sea coast, Yantarny settlement, Kaliningrad Region, Russia. This is the second described fossil member of the genus Statira Lepeletier et Audinet-Serville, 1828 and the tribe Lagriini Latreille, 1825, and the first from outside the New World.

Third extinct species of the extant genus Xyletinus Latreille, 1809 is figured and described from Baltic amber. A key to fossil species of Xyletinus is provided.

A critical annotated catalogue of Silphidae species recorded in Latvia is presented. In total, 20 species belonging to 8 genera and two subfamilies are confirmed for Latvia. A complete bibliography of Latvian large carrion beetles is reviewed and analysed. The brief research history of Latvian Silphidae is presented. The Latvian silphid fauna is re...

The holotype of Dignomus regiomontanus Alekseev, 2014, from the Eocene Baltic amber (Tertiary, Paleogene), is re-examined and re-described. Dignoptinus gen. nov. is proposed to place this species. Bruchoptinus Reitter, 1884, and Pseudoptinus Reitter, 1884, described as subgenera of Ptinus Linnaeus, 1767, are the closest relatives of the new fossil...

New species of the genus Xyletinus Latreille, 1809, namely X. (s.str.) besseli sp. nov. and X. (s.str.) barsevskisi sp. nov., from Eocene Baltic amber, are described and illustrated.

The fully inflated endophalli of Cassida denticollis Suffrian, 1844, C. prasina Illiger, 1798, C. sanguinolenta O.F. Müller, 1776, and C. viridis Linnaeus, 1758 are illustrated and described for the first time. The endophallus in these species is membranous, symmetrical and divided in three parts (basal, medial and apical). Borders between parts ar...

Waidelotus hoffeinsorum gen. et sp. nov. is described from Eocene Baltic amber and assigned to Waidelotinae subfam. nov. within family Pyrochroidae (Coleoptera). The new subfamily differs from the other subfamilies by the following combination of features: penultimate tarsomere of all tarsi deeply bilobed, antepenultimate tarsomere of each pro-and...

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...

Fossil records of Lamprosomatinae (Coleoptera: Chrysomelidae) are scarce. Till now only three findings of this subfamily were reported and all originated from Eocene Baltic amber. Based on well-preserved specimen, Damzenius anitae gen. et sp. nov. is described and illustrated from this Lagerstätte. A key to the known extinct species of Lamprosomati...

Cacomorphocerus eocenicus sp. nov. (Coleoptera: Cantharidae) is described and illustrated on the base of one well-preserved specimen from Eocene Baltic amber. It is the sixth described species of this fossil genus, and it is characterized by possessing antennomeres 6–7 that are slightly modified and dilated (while antennomeres 3–9 are modified, and...

Despite the increasing rate of systematic research on extant tenebrionoid Coleoptera of the Anthicidae and Ischaliidae, their fossil records remained largely unrevised. In the current paper we review all hitherto named ant-like flower beetles and false firecoloured beetles fossils. We suggest 17 fossil species can be reliably assigned to the Anthic...

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...

The new monotypic subgenus Stenolassussubgen. nov. of the genus Stenohelops Reitter, 1922 is described for Stenohelops klebsi (Nabozhenko, Perkovsky et Chernei, 2016) comb. nov. (Coleoptera: Tenebrionidae), which was previously described within the genus Nalassus Mulsant, 1856. This species is transferred to Stenohelops Reitter, 1922 based on the s...