Species of NoviusMulsant, 1846 (= Rodolia Mulsant) of the tribe Noviini are highly specialized predators, especially of scale insects in the family Margarodidae. Five known endemic species of Novius are recorded from Australia: N. bellus Blackburn, 1889, N. cardinalis (Mulsant, 1850), N. koebelei Olliff in Craw, 1892, N. lindi Blackburn, 1889 and N. sanguinolentusMulsant, 1850. The following new species synonymies are proposed: Novius bellus Blackburn, 1889 = Novius immaculatusLea, 1902 = Eurodolia severiniWeise, 1895; Novius koebelei Olliff in Craw, 1892 = Novius limbatusBlackburn, 1895 = Novius tridensLea, 1902 = Novius simplicipennisBlackburn, 1895 = Novius discoidalisBlackburn, 1895 = Novius tripustulatusBlackburn, 1895 = Novius ruber Blackburn, 1889 = Rodolia blackburniUkrainsky 2009. Lectotypes are designated for Novius Koebelei Olliff in Craw, N. limbatusBlackburn, 1895, N. lindi Blackburn, 1889, N. simplicipennisBlackburn, 1895, N. discoidalisBlackburn, 1895, N. tripustulatusBlackburn, 1895 and N. ruber Blackburn, 1889. Nomenclatural history, diagnostic characters and illustrations are provided for each species based on the examination of available type material and extensive holdings in collections. A key to the Australian Novius species, based mainly on male genitalia is provided. An updated checklist of the worldwide valid species of Novius Mulsant is included and 63 species are transferred to Novius Mulsant (comb. nov.).

A new species from the extinct ant genus Eocenomyrma, E. groehnisp. nov., is described based on worker from the Baltic amber (Late Eocene, Priabonian stage, 33.9–37.2 Ma). It the most resembles E. orthospina Dlussky et Radchenko, 2006 by shape of the propodeal spines and by the general appearance, but well differs from the latter by structure of the frontal carinae, which merging with the rugae that extend to the occipital margin; in contrary, the frontal carinae in E. orthospina are short, curve outwards and merge with the rugae, which surround antennal sockets. Additionally, entire head dorsum in E. groehni covered by the slightly sinuous longitudinal rugae, but in E. orthospina the only frons is with the not coarse longitudinal, slightly sinuous rugae, but the lateral parts of the head dorsum and occiput are with reticulation.

Two new species of biting midges are described and illustrated from West Palaearctic. They are: Forcipomyia (F.) pyrenaicasp. nov. from France (Pyrenees-Orientales) and Monohelea mediterraneasp. nov. from France (Pyrenees-Orientales) and North Algeria (Sahara).

Global knowledge of tardigrade diversity is limited, and there still are regions with poorly studied fauna, such as Nepal. We applied an integrative taxonomy approach to describe a new tardigrade species from this area. The presented analysis was based on morphological and morphometrical data (using both light and scanning electron microscopy) and combined with multilocus molecular data (nuclear barcode sequences, i.e. 18S rRNA, 28S rRNA and ITS-2, and one mitochondrial COI sequences). The p-distances enabled an independent verification of Macrobiotus wandaesp. nov. as a species new to science. Molecular data allowed us to determine the phylogenetic position of Mac. wandaesp. nov. within the hufelandi group. Based on egg morphology, i.e. porous egg chorion and processes in shape of cones with terminal discs, new species is most similar to Mac. biserovi, Mac. denticulus, Mac. diversus, Mac. glebkai, Mac. macrocalix, Mac. maculatus and Mac. ramoli. But it differs from them mainly by some morphological and morphometrical characters of eggs (number of egg processes on circumference, details of egg shell sculpture, and morphology of terminal discs of eggs) and adults (oral cavity armature type, morphology of lunule and presence or absence of leg granulation). Moreover, we report from Nepal six other tardigrade taxa: Calohypsibius cf. maliki, Echiniscus blumi, Echiniscus nepalensis, Mesobiotus cf. furciger, Richtersius coronifer and Stellariscus cf. latifasciatus.

A new species of Noviini, Novius marek Ślipiński and Pang sp. nov. is described from New Caledonia. It is the largest known species of the genus, easily recognised by its size, very flat body and zigzag darker pattern on yellowish-brown elytra. A key to the New Caledonian species of Novius, new distribution records and illustrations of known species are also provided.

Australian fauna of the tribe Macrotomini Thomson, 1861 is revised, and 37 species in 16 genera are recognised, illustrated and discussed. Keys to the species are provided. Based on the morphological characters and our previous molecular phylogenetic studies, the following new species are described: Analophus septentrionalissp. nov., Archetypus marginatussp. nov., Brephilydia fearnisp. nov., Eurynassa tuberculicollissp. nov., Hagrides mandibularissp. nov., and Hermerius occidentalissp. nov.; the following new taxonomic actions are proposed: Agrianome howei (Olliff) stat. rev., Cnemoplites cnemoplitoides (Thomson) comb. nov., Eurynassa servillei Thomson stat. rev., Eurynassa stigmosa (Newman) stat. rev., Pesudoplites hamali (Lameere) comb. nov., Arimaspes howeiThomson, 1864 = Cnemoplites (Hermerius) intermediaWilson, 1923syn. nov., and Cnemoplites (Cnemoplites) hamali Lameere, 1903 = Macrotoma (Pseudoplites) inexpectataLameere, 1916syn. nov. Lectotypes are designated for the following species: Prinobius coxalis Gahan, Mallodon jejunum Pascoe, Cnemoplites (Cnemoplites) argodi Lameere, Cnemoplites gahani Lameere, Teispes frenchi Blackburn, Eurynassa servillei Thomson, Cnemoplites (Cnemoplites) blackburni Lameere, and Hermerius impar Newman. Neotypes are designated for the following species: Cnemoplites howei Olliff, Cnemoplites edulis Newman, and Mallodon australis Boisduval. The Holotype specimen of Dioclides prionoides Thomson is discussed and clarified. A checklist to all species of Australian Macrotomini is provided.

Megaselia aliusaliussp. nov., M. exwignatparksp. nov., M. pilusdepilatasp. nov., M. polonicisp. nov., M. quasirufifronssp. nov., M. reduncussp. nov. and M. setaeneclobisp. nov., are described from Poland.