The Australian Dicranolaius fauna is revised based on 79 described species (30 of them are new). The revision is mainly based on males as they only provide good diagnostic characters for species recognition. The following new species are described: Dicranolaius acacia sp. nov., D. alice sp. nov., D. anic sp. nov., D. archer sp. nov., D. balah sp. nov., D. bogan sp. nov., D. brittoni sp. nov., D. cardaleae sp. nov., D. chinchilla sp. nov., D. confusus sp. nov., D. crypticus sp. nov., D. desertus sp. nov., D. eromanga sp. nov., D. hudsoni sp. nov., D. kildurk sp. nov., D. kimberley sp. nov., D. kinchega sp. nov., D. micrus sp. nov., D. moffatt sp. nov., D. monteithi sp. nov., D. pilbara sp. nov., D. proserpine sp. nov., D. pulleni sp. nov., D. quorn sp. nov., D. reidi sp. nov., D. rockhampton sp. nov., D. spinifex sp. nov., D. thylungra sp. nov., D. uptoni sp. nov., D. zborowskii sp. nov. The following new combinations are proposed: D. ammophilus (Lea, 1917) (Laius), comb. nov., D. distortus (Blackburn, 1888) (Laius), comb. nov., D. egenus (Lea, 1899) (Laius), comb. nov., D. eremita (Blackburn, 1895) (Laius), comb. nov., D. eyrensis (Blackburn, 1892) (Laius), comb. nov., D. guttulatus (Fairmaire, 1877) (Laius), comb. nov., D. melanoderes (Lea, 1917) (Laius), comb. nov., D. minutus (Lea, 1914) (Laius), comb. nov., D. purpureiceps (Lea, 1915) (Laius), comb. nov., D. variegatus (Blackburn, 1889) (Laius), comb. nov., D. verticalis (Macleay, 1826) (Laius), comb. nov., Intybia cavicornis (Lea, 1909) (Laius), comb. nov., Intybia hackeri (Lea) (Laius) comb. nov.; Simoderus megalops (Lea) (Laius) comb. nov. The following synonymies are proposed: D. bellulus (Boisduval, 1835) [= D. cyanocephalus (Lea, 1909); = D. intermedius (Lea, 1909); = D. nidicola (Lea, 1909); = D. orcicornis (Lea, 1909)], D. conicicornis (Blackburn, 1888) [= D. rugiceps (Lea, 1899)], D. guttulatus (Fairmaire, 1877) [= D. longus (Lea, 1929)], D. verticalis (Macleay, 1826) [ = D. tarsalis (Lea, 1909)]. The lectotypes of the following species are designated: Laius acervatus Lea, 1917; L. ammophilus Lea, 1917; <

A new genus of Thanerocleridae, Archaeozenodosus bellus Yu and Kolibač gen. et sp. nov., is described and illustrated from the Upper Cretaceous (Cenomanian, ca. 99 Ma) amber near the Hukawng Valley of northern Myanmar, making it the first Mesozoic record of the family. Morphological characters preserved in the Burmese amber highlight the diversity of thaneroclerids during the Late Mesozoic and provide data for future phylogenetic studies of Thanerocleridae.

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.

A review of supralitoral species of the genus Trachyscelis in the Western Palaearctic and Afrotropical regions with new data on distribution and morphology of five Palaearctic species is given. The new smallest eyeless and wingless species T. shokhini sp. nov. is described from Agadir (Morocco) and the new species T. kochi sp. nov. with reduced tarsomeres and eyes is described from Socotra Island (Yemen). The latter species is similar to T. subcoecus Koch, 1960, from which it differs by different number of ommatidia, different tarsal formula, different shape of clypeus and different body size. Trachyscelis leoi Lo Cascio & Grita, 2011 and T. litoralis Soldati, 2009 are found on Socotra Island for the first time, T. tenuestriatus Fairmaire, 1886 is new record for Iran. Catalogue of the tribe Trachyscelini of the world with 20 species of 3 genera is given. The key to eight Western Palaearctic and Afrotropical species of Trachyscelis is given.

The genus Lyphia Mulsant & Rey, 1859 (Tenebrionidae: Triboliini Gistel, 1848) with the type species Lyphia ficicola Mulsant & Rey, 1859 (junior synonym of Bius tetraphylla Fairmaire, 1856) is widespread in the Palaearctic, Oriental and Papuan-Pacific Regions, as well as in Africa. The present study treats all species known from the Oriental Region including the Himalayas and China, Taiwan, and from all Sunda Islands including Lombok and Sulawesi. Additional available species from Papuan and Pacific Regions are also listed and figured for comparison. An identification key for the Oriental species is compiled. New species: Lyphia weigeli sp. nov. (Ternate Island, Moluccas). New synonyms: Lyphia indicola Gebien, 1922 (= Lyphia subopaca Blair, 1930 syn. nov.) and Lyphia instriata Pic, 1924 (= Lyphia elongata Pic, 1924 syn. nov., Lyphia longiceps Pic, 1924 syn. nov., Lyphia orientalis Blair, 1930 syn. nov.). Lectotypes are designated for Lyphia elongata Pic, 1924, Lyphia instriata Pic, 1924, Lyphia laeviceps Gebien, 1922, Lyphia longiceps Pic, 1924, Lyphia punctaticeps Pic, 1924, and Lyphia substriata Pic, 1924.

On the basis of a newly performed cladistic analysis the taxonomic concepts of Pedinina and its generic components are revised. Blindus and Colpotus are interpreted as subgenera of Pedinus, while Pedinulus and Vadalus are placed in synonymy with that name. Subgenera of Cabirutus are merged: (Cabirutus =Asiobirus syn. nov., =Dentibirus syn. nov.) Loensus (formerly Loensina) and Pseudopedinus (formerly incerte sedis) are transferred into the subtribe. In conclusion, Loensina is placed as a synonym of Pedinina. The following genera and subgenera are distinguished among Pedinina: Cabirutus (subgen. Cabirutus, Neocabirutus stat. nov.), Colpotinus, Loensus (subgen. Loensus, Pseudopedinus stat. nov.) and Pedinus (subgen. Blindus stat. rev., Colpotus stat. nov., Pedinus). An identification key to all genera and subgenera of the investigated subtribe is provided. Biogeographic patterns observed within Pedinina are briefly discussed. Loensus (Loensus) immaculatus is described as a new species. Pedinus infortunatus nom. nov. is proposed as a replacement name for Pedinus strigicollis Reitter, 1904, while Pedinus strigicollis Mulsant and Rey, 1853 for Pandarus strigosus Costa, 1847. A checklist of all species representing Pedinina is provided.

Abstract: This paper describes the morphological ultrastructure of the previously unknown final larval instars of the obligate myrmecophilous rove-beetle species Lomechusa pubicollis. Diagnostic larval characters for the genus Lomechusa are proposed for the first time. At present, this paper is the only up-to-date, detailed and richly illustrated description of the external structures of larvae representing the Lomechusina subtribe. The features of L. pubicollis larvae described here correspond with the abiotic (e.g. absence of ocelli, white body) or biotic conditions (e.g. stumpy body, short legs, absence of urogomphi, dense and asymmetrical chaetotaxy, membranous cuticle) of the anthill, including the passive lifestyle resembling that of the host larvae Formica truncorum, in conjunction with a unique behaviour pattern in the myrmecophileant relationship. Morphological similarities between mature larvae of L. pubicollis and workers of Formica truncorum, the host of this myrmecophile, are also listed. The morphological structure of L. pubicollis larva with the so far best-known larvae of another myrmecophile from the Lomechusini tribe Pella laticollis living in the peripheral zones around the nest, was compared. The different lifestyles of the two species is reflected in the morphological structure of their larvae, particularly: chaetotaxy, structure of setae, ocelli, structure of mouthparts, legs and urogomphi. The characteristics of the morphological structure peculiar to L. pubicollis larva in conjunction with well-developed chemical mimicry, they enable complete adoption and integration in the ant nest, which at such an advanced level appears to be unique compared to other staphylinid myrmecophiles.