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EN
The proportions of animal inclusions and syninclusions in a sample of unselected Baltic amber from the Sambian deposit are presented.
3
Content available remote LC-MS and FT-IR characterization of amber artifacts
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EN
This work focuses on using analytical methods, such as Fourier transform Infrared spectroscopy (FTIR) and high performance liquid chromatography (HPLC) with mass spectrometry (MS) detection to assess archaeological and geological amber. The main goal of this study is to apply the previously developed and optimized analytical methods in verifying criteria to ascribe and characterize the origin of materials found in archaeological sites. The proposed LC-MS method was successfully applied for the quantification of succinic acid content both in geological and archaeological samples of amber and offers excellent linearity between 0.1 and 5µg mL−1. The developed FTIR method provided some criteria which is able to differentiate between Baltic and Romanian amber (Romanite) that furthermore validates on archaeological amber artefacts. [...]
EN
Contrary to insects, snails only rarely become embedded in amber. Snail inclusions dealt with in this paper come from Baltic amber: five represent species described at the end of the 19th c., whose status has now been revised, two are of uncertain position, one is a Leiostyla - a genus not previosly found in amber, and one - Propupa hoffeinsorum gen. and sp. nov., with its unique apertural barriers - may prove an important link in further studies on the origin, evolution and distribution of pupilloids. Reasons for the rarity of snail inclusions and geographical affinities of the Baltic amber snails are discussed. A catalogue of Baltic amber snails is provided.
EN
The history and scope of the collection of inclusions in Baltic amber of the Muséum d’histoire naturelle Neuchâtel (MHNN) is briefly outlined. Diptera are largely dominant, with some 4600 specimens belonging to 38 families, some of which are of rare or very rare occurrence in Baltic amber. A table summarizing the families represented in the collection and including the number of specimens of each of them is provided.
EN
In a small piece of Baltic amber several poorly preserved amphipod crustaceans were found. The most probable seems to be the affinity of these amphipods to the freshwater family Crangonyctidae.
EN
A new species of the genus Dicranomyia Stephens, 1829 (Diptera: Limoniidae) from Baltic amber (Eocene) is described. The characteristic feature distinguishing a new species, D. gorskii sp. nov. is the presence of the surprisingly strong and elongate spine on rostral prolongation of ventral gonostylus. The morphological features of the new species are briefly discussed. New replacement name Dicranomyia alexandri nom. nov. for Dicranomyia nagellata (Alexander, 1931) is proposed to avoid with Dicranomyia nagellata Edwards, 1928.
EN
The new genera and species of the new fossil tribe Protodikraneurini trib. nov. of leafhoppers (Cicadellidae: Typhlocybinae) are described. The new genera and species are: Protodikraneura gen. nov. with Protodikraneura cephalica sp. nov. and Protodikraneura nasti sp. nov., Stareono mirabilis gen. nov. and sp. nov. The keys to recently recognized tribes of Typhlocybinae is given. Taxonomie position of Protodikraneurini as well as extant tribes of Typhlocybinae is discussed. Some other fossils formerly believed to be representatives of Typhlocybinae and their placement is also discussed. "Typhlocyba" bremi Heer, 1855 is excluded from Typhlocybinae.
EN
Asida groehni sp. nov. (Coleoptera, Tenebrionidae, Asidini) is described from Eocene Baltic amber from the Kaliningrad Region (Russia). This is the first fossil species belonging to the genus Asida Latreille, 1802 and only the eighth described darkling beetle species from Eocene Baltic amber. This species helps support the hypothesis that the climate in this part of Europe was warmer during Eocene, as no Asida species are currently present in the Baltic area due to not appropriate climate. This new fossil species is similar to modern Asida species in the subgenus Planasida Escalera, 1907, which occur in the Iberian Peninsula and the Maghreb, but it differs from all known Asida in pronotal sculpturing and pilosity, and by its yellow brown shiny cuticle, well visible on the pronotal disc. Despite species-level differences, the new extinct species appears to fit easily within the extant genus Asida.
EN
The male subimago of Analetris secundus sp. nov. is described and illustrated from the Eocene Baltic amber. A new species presents the first fossil representative of the previously monotypie genus Analetris Edmunds, 1972. The extant species Analetris eximia Edmunds, 1972 is known from the Northwestern of the North America. Critical characters distinguishing these both species are discussed.
EN
Burshtynogena fereci gen. and sp. nov. from Eocene Baltic amber is described and illustrated. Burshtynogena gen. nov. differs from other known Heptageniidae genera by the combination of the following characters: pterostigmatic area only with simple, not anastomoused veins; furcasternal protuberances of mesothorax almost rectangular; hind wing narrow (the width/length ratio = 0.45) with well developed venation; tarsal claws dissimilar on all legs; subgenital plate small, narrow, poorly developed, shallow sinuous; subanal plate with slightly concave posterior margin.
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