Thrips (Thysanoptera, Insecta) from the Rovno amber, Eocene of Ukraine

Seventy-six thrips were discovered in Rovno amber. Among these, 67 were identified to suborder, 52, to family, 45, to genus, and 41, to species level. In total, five species, six genera, five families, and two suborders are recorded. No undescribed taxa have been found so far. All the identified thrips, except those of the genus Phloeothrips, belong to fossil taxa, previously known only from the Baltic and Bitterfeld ambers. However, the composition of species in the Rovno amber is highly unusual due to domination of Praedendrothrips avus Priesner, 1924. This species, rare in the Baltic amber, constitutes 49% of all the Rovno records. Thus, the Rovno amber, in contrast to the Baltic and Bitterfeld ambers, is characterized by poor taxonomic diversity of thrips and presence of a clearly dominant species.     

New stoneflies (Insecta: Perlida = Plecoptera) from Eocene Rovno amber,Ukraine

A new genus, Rovnocapnia gen. nov., with new species R. atra sp. nov. and R. ambita sp. nov., from the family Capniidae, and a new genus and species Palaeoleuctra acuta gen. sp. nov., from the family Leuctridae, of the suborder Nemourina (Euholognatha), are described from Late Eocene Rovno amber. Familial assignment of one additional specimen (suborder Perlina, infraorder Perlomorpha (Systelognatha)), represented by a nymphal skin, is obscure due to its incomplete preservation.     

New species of caddisflies (Insecta: Trichoptera) from the Rovno amber,Eocene of Ukraine

A new genus and seven new species of the caddisfly families Philopotamidae, Polycentropodidae, Ecnomidae, Hydroptilidae, and Leptoceridae (Wormaldia nasticentia sp. nov., Holocentropus flexiflagrum sp. nov., Electrocyrnus perpusillus gen. et sp. nov., Archaeotinodes reveraverus sp. nov., Agraylea electroscientia sp. nov., Triplectides palaeoslavicus sp. nov., and Leptocerus solifemella sp. nov.) from the Rovno amber (Upper Eocene, Ukraine) are described     

Two new records of Telenominae (Hymenoptera, Scelionidae) from the Rovno amber (Eocene of Ukraine)

Two new scelionid species of the subgenus Telenomus, genus Telenomus, subfamily Telenominae are described: Telenomus (Telenomus) oculus sp. nov. and T. (T.) tetragonus sp. nov. Brief morphological characterizations of the new taxa are given, and comparative analysis of the inclusions described and members of the recent fauna is provided.     

Seven new species of caddisflies (Insecta: Trichoptera) from the Rovno amber (Eocene of Ukraine)

Seven new caddisfly species of the families Polycentropodidae, Psychomyiidae, and Lepidostomatidae are described from the Late Eocene Rovno amber: Holocentropus kobodok sp. nov., H. zhiltsovae sp. nov., Plectrocnemia nastigermania sp. nov., P. ucrainica sp. nov., Nyctiophylax terreusbos sp. nov., Lype essentia sp. nov., and Lepidostoma quasitypica sp. nov.     

First Record of Fungal Fruit Bodies on a Leaf from Late Eocene Rovno Amber (Ukraine)

Paleontological Journal - The first record of fruit bodies of a microscopic fungus on the leaf of an unidentified dicotyledonous plant in amber is reported. The fungus is represented by numerous...     

A parasitic wasp of the platygastrid family (Platygastroidea, Platygastridae, Sceliotrachelinae) first recorded in the Rovno amber (Eocene of Ukraine)

A new platygastrid species, Platystasius gracilis sp. nov., from an inclusion in Upper Eocene Rovno amber is described. The new species is assigned to the genus Platystasius Nixon, 1937. The morphological characteristics of the new species are described, and comparative analysis of the inclusion and a representative of the Recent fauna are provided.     

A new tribe of fossil digger wasps (Insecta: Hymenoptera,Crabronidae) from the Rovno amber,Eocene of Ukraine

A new tribe of digger wasps, Protomicroidini trib. nov. (Hymenoptera, Crabronidae), including a single known species Protomicroides sororius gen. et sp. nov. is described from the Upper Eocene Rovno amber, Ukraine. The new tribe combines features characteristic of several tribes of the Crabroninae and is a sister group of the extant tribe Oxybelini. The most distinctive characters of the new tribe include nonelongate propodeum with strongly developed lateral keel and enclosed dorsal area; semioval postscutellum with a lamellate border; absence of pygidial plate, psammophores, and digging tarsal rakes; and considerably reduced forewing venation.     

New species of Late Eocene dermestid beetles (Coleoptera, Dermestidae) from the Rovno and Baltic ambers

Fossil beetles of the family Dermestidae are reviewed. Three new species are described: Dermestes progenitor and Megatoma electra from the Baltic amber and Dermestes vetustus from the Rovno amber (Late Eocene).     

Third contribution on Rovno amber silken fungus beetles: a new Eocene species of Cryptophagus (Coleoptera, Clavicornia, Cryptophagidae)

Cryptophagus alexagrestis Lyubarsky & Perkovsky, sp. n. is described based on a fossil inclusion in Late Eocene Rovno amber (Ukraine). The new species is similar to the extant Cryptophagus skalitzkyi Reitter and Cryptophagus dilutus Reitter, differing from the latter by having a very transverse, short and dilated 10th antennal segment, and from the former by the very elongate segments of the flagellum.     

Ants of the tribe Formicini (Hymenoptera,Formicidae) from Late Eocene amber of Europe

The tribe Formicini (Formicinae) from the Late Eocene Baltic, Bitterfeld, Rovno, and Scandinavian ambers is revised. Ants are recorded for the first time from the Bitterfeld and Scandinavian ambers. Two new genera (Cataglyphoides gen. nov. and Conoformica gen. nov.) and six new species (Cataglyphoides intermedius sp. nov., Conoformica bitterfeldiana sp. nov., Formica kutscheri sp. nov., F. palaeopolonica sp. nov., F. radchenkoi sp. nov., F. zherikhini sp. nov.) are described. A new combination, Cataglyphoides constrictus (Mayr, 1868), comb. nov., is established. A lectotype of Camponotus constrictus Mayr, 1868 and a neotype of Formica phaethusa Wheeler, 1915 are designated. Formica clymene Wheeler, 1915 is recognized as a new synonym of F. phaethusa Wheeler, 1915. An identification key for workers of Formicini species from Late Eocene European ambers is provided.     

The first record of Embolemidae (Hymenoptera Chrysidoidea) in the Rovno amber (Upper Eocene) of Ukraine: A male of <Emphasis Type="Italic">Ampulicomorpha succinalis</Emphasis> brues

A male of Ampulicomorpha succinalis Brues (Hymenoptera Chrysidoidea: Embolemidae) from the Upper Eocene Rovno amber (34–37 Ma) is described for the first time.     

Occurrence of ant (hymenoptera, formicidae) and aphid (homoptera, aphidinea) syninclusions in Saxonian and Rovno ambers

Ant species found as syninclusions with aphids in Rovno and Saxonian ambers are listed for the first time. In a collection of 143 pieces of Rovno amber with worker ants, aphids were found in only one syninclusion with Ctenobethylus goepperti (Mayr). In a collection of Saxonian amber, 53 aphids of the genus Germaraphis were found in 152 amber pieces with ant workers; five syninclusions with aphids contained 19 specimens of C. goepperti; two syninclusions contained ten specimens of Lasius schiefferdeckeri Mayr; and three syninclusions contained one specimen each: one Camponotus mengei Mayr, one Anonichomyrma constricta (Mayr), and one Formica flori Mayr. Considering that the Rovno and Saxonian collections are nearly equal in the number of amber pieces, the fundamental difference in the number of syninclusions is striking. The number of C. goepperti in syninclusions is disproportionately high; the proportion of syninclusions with aphids and C. goepperti is 1.6 times that of all inclusions of workers of this species. They are found in 31% of examined inclusions of workers in the collection of the Saxonian amber, but in 50% of syninclusions of the entire collection. This strongly suggests that C. goepperti and Germaraphis formed an association during their lifetime.     

A new genus and species of Dictyopharidae (Homoptera) from Rovno and Baltic amber based on nymphs

Alicodoxa rasnitsynigen. et sp. n. (Dictyopharinae: Orthopagini) is described based on a nymph from Rovno amber; it also occurs in Baltic amber. A small additional wax plate dorsal to the large wax plate of abdominal tergites VI-VIII is first reported in this and other genera of Dictyopharidae. A lectotype is designated for Pseudophana reticulata Germar & Berendt, 1856 transferred to Protepiptera (Achilidae): Protepiptera reticulata (Germar & Berendt, 1856), comb. n.     

New approaches for reconstruction of the ecosystem of an Eocene amber forest

Analytical data on fauna of the beetles and flora of vascular plants from Baltic amber are given. The community of the amber forest is reconstructed on the basis of these data. It was a thermophilic, humidmixed forest similar to modern subtropical forests of Eastern and Southeastern Asia. The existing reconstructions representing this community as a mountain forest predominated by conifers are not confirmed.     

New species of bark beetles from the Rovno amber (Insecta: Coleoptera: Scolytidae)

Two new species of bark beetles are described from the Late Eocene Rovno amber. Xylechinus mozolevskae sp. nov. (Hylesininae: Tomicini) is the first fossil representative of this genus, differing from recent species in having large triangular scales along the suture. Taphramites rovnoensis sp. nov. (Scolytinae: Dryocoetini) differs from the closest species, T. gnathotrichus from Baltic amber, in the presence of short thin hairs on the elytra.     

New genera and species of Scelionidae (Insecta: Proctotrupoidea) from Rovno amber

Two new genera and three new species of parasitic wasps from the family Scelionidae are described from the Late Eocene Rovno amber: Pseudotelea gracilis Kononova, gen. et sp. nov. (subfamily Scelioninae), Pseudidris striatus Kononova, gen. et sp. nov., and Ceratobaeoides cornutus Kononova, sp. nov. (subfamily Baeinae). The new taxa are compared with representatives of the Recent fauna.