This paper presents the first complete and updated list of all 3597 species of beetles (Insecta: Coleoptera) belonging to 92 familiesfound and published in Lithuania until 2011, with comments also provided on the main systematic and nomenclatural changes since the last monographic treatment in two volumes (Pileckis and Monsevičius 1995, 1997). The introductory section provides a general overview of the main features of the territory of Lithuania, the origins and formation of the beetle fauna and their conservation, the faunistic investigations in Lithuania to date revealing the most important stages of the faunistic research process with reference to the most prominent scientists, an overview of their work, and their contribution to Lithuanian coleopteran faunal research.Species recorded in Lithuania by some authors without reliable evidence and requiring further confirmation with new data are presented in a separate list, consisting of 183 species. For the first time, analysis of errors in works of Lithuanian authors concerning data on coleopteran fauna has been conducted and these errors have been corrected. All available published and Internet sources on beetles found in Lithuania have been considered in the current study. Over 630 literature sources on species composition of beetles, their distribution in Lithuania and neighbouring countries, and taxonomic revisions and changes are reviewed and cited. An alphabetical list of these literature sources is presented. After revision of public beetle collections in Lithuania, the authors propose to remove 43 species from the beetle species list of the country on the grounds, that they have been wrongly identified or published by mistake. For reasons of clarity, 19 previously noted but later excluded species are included in the current checklist with comments. Based on faunal data from neighbouring countries, species expected to occur in Lithuania are matnioned. In total 1390 species are attributed to this category and data on their distribution in neighbouring countries is presented. Completion of this study provides evidence that the Lithuanian coleopteran fauna has yet to be completely investigated and it is estimated that approximately 28 % of beetle species remain undiscovered in Lithuania. More than 85% of beetle species expected for Lithuania have been found in the following families: Cerylonidae, Geotrupidae, Haliplidae, Kateridae, Lycidae, Lucanidae, Mycetophagidae, Scarabaeidae and Silphidae. In families with few species such as Alexiidae, Boridae, Byturidae, Dascilidae, Drilidae, Eucinetidae, Lampyridae, Lymexilidae, Megalopodidae, Nemonychidae, Nosodendridae, Noteridae, Orsodacnidae, Pyrochroidae, Pythidae, Psephenidae, Rhysodidae, Sphaeritidae, Sphaeriusidae, Sphindidae, Stenotrahelidae and Trogidae, all possible species have already been discovered. However in some beetle families such as Aderidae, Bothrideridae, Eucnemidae, Laemoploeidae, Mordellidae, Ptiliidae, Scraptidae and Throscidae less than 50% of all possible species are known. At present the ...

Sticky traps baited with pheromones for Dendroctonus rufi pennis were set up in the Klaipėda port and at the Vaidotai railway station alongside temporary stored timbers and in forests along roads in June-July 2000 (21 localities across the entire Lithuania); 111 beetle species and 6 genera were detected. Eight trophic groups of beetles were identifi ed, and among them the largest number (38.7% of species detected and 28.5% of beetle specimens) presented a decaying wood and mycetobiont beetle group. Most frequent beetles were Dasytes plumbeus (Dasytidae), Sciodrepoides watsoni (Leiodidae) and Polygraphus poligraphus (Curculionidae). Scolytinae were represented by 5 species and 83 beetle specimens, No D. rufi pennis was trapped. Rhacopus sahlbergi (Eucnemidae) and Anobium nitidum (Anobiidae) beetles were caught in two localities, and the species were ascertained as new for the Lithuanian fauna. Th ere was detected 71 new localities with the occurence of 54 beetle species rare for Lithuania.

This paper presents the first faunistic review of species composition and distribution of Tetratomidae and Melandryidae (Coleoptera: Tenebrionoidea) in Lithuania. An annotated checklist of the species is given. The peculiarities of some morphological structures of Dircaea australis, Phloiotrya subtilis, Orchesia fusiformis, O. micans and Zilora cf. obscura are briefly reviewed and illustrated. Information on five species of Tetratomidae and twenty-two species of Melandryidae is given, including faunistic data, prior records, general distribution, and notes on frequency, ecology and morphological peculiarities of some species. Eustrophus dermestoides (Tetratomidae), Phloiotrya rufipes, Hypulus bifasciatus and Phryganophilus ruficollis (Melandryidae) known from previous literature records are excluded from the Lithuanian fauna due to suspect data on their occurrence in the country. Phloiotrya subtilis and Orchesia fusiformis are recorded from Lithuania for the first time. The presence of Tetratoma fungorum and Abdera flexuosa in the Lithuanian fauna was confirmed by actual faunistic data, which were previously absent. Four species of Tetratomidae and 19 species of Melandryidae are confidently included in the Lithuanian fauna, corresponding to 50% of the total European fauna of both families excluding regional endemics.

The current article presents faunistic data on 18 leaf-beetle (Chrysomelidae) species in Lithuania. Three species of them, Chrysolina herbacea (Duftschmid, 1825), Gonioctena intermedia (Helliesen, 1913) and Phyllotreta dilatata Thomson, 1866, are mentioned for the local fauna for the first time. The reviewed material is deposited in collections of Kaunas Tadas Ivanauskas Zoological Museum. A short review of the history of leaf-beetle research in Lithuania is given.

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