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Hydroporus novacula sp. n. is described on a single male accidentally found when collecting Staphylinidae (Coleoptera) in south-western Georgia (Caucasus) by sifting more or less dry material quite far from any water. The species belongs to the longulus-group of the genus (former subgenus Sternoporus). However, the shape of the median lobe, the club-like pro- and mesotibiae and the evenly curved protarsal claws separate it from all other species of the group. Additionally, no natatory setae could be detected on any leg of the single male studied. Together with the collecting circumstances, it appears not unlikely that the new species is the first terrestrial Hydroporus known to science. The species is described in detail and important features are illustrated.The male of Glyphiulus formosus (Pocock, 1895) is described for the first time based on specimens collected from Shenzhen, Guangdong, China. According to the male sexual characters, this species is verified to be a member of the G. javanicus group. In addition, a DNA barcode of the partial COI gene of G. formosus is provided.Two new species of the genus Alysson Panzer, namely, A. bengalensis Girish Kumar sp. nov. and A. himachalensis Girish Kumar sp. nov. are described from the Indian Himalayas. Alysson triangularis Krombein, 1985 is reported here for the first time from India. Analysson rufescens Krombein, 1985 is reported here for the first time from Chhattisgarh and Jharkhand. A key to species of Alysson of the Indian subcontinent is provided.During a survey on the benthic invertebrates of the upper reaches of river Eo (Galicia, NW Spain), a dense population of epigean asellid isopods were detected in the source of the river. After examination, these specimens resulted to belong to a new species of the genus Bragasellus Henry Magniez, 1968. The new species comes to fill a geographical gap between the two alleged ancestral areas of the genus and is characterized by its appendix masculina (male pleopod II endopod), which bears a short but distinct cylindrical cannula and lacks basal process. Other characteristic traits are uniform black pigmentation in live specimens, pereopod I dactylus shorter than the palm of the propodus, smooth (instead of plumose) texture of the marginal setae on male pleopod I exopod, and pleopod III exopod with a straight internal side. In this job, description of the new taxon is provided, as well as a key to all the known species belonging to the genus.A new monotypic genus of ricaniid planthoppers (Hemiptera Fulgoromorpha Ricaniidae), Hagneia gen. nov., is described for Hagneia kallea sp. nov. (type species). Habitus, male and female external and internal genital structures of the new species are illustrated.The Central Asian species of the winter moth genus Phthorarcha Meyrick, 1892 are revised and some specimens of the type series of Phthorarcha primigena Staudinger, 1895 are separated and described as Phthorarcha haberhaueri, sp. nov. These poorly known moths and their male and female genitalia are described and illustrated and discrimination of the genera Phthorarcha, Alsophiloides Inoue and Chimaphila Nakajima Wang is analysed.Sponges (phylum Porifera) are ubiquitous inhabitants of marine ecosystems and have been shown to provide substantial ecosystem services. Despite this ecological importance, the sponge fauna in California has received little study. Here I use a collection of kelp forest sponges to describe the diversity of the order Tethyida in California. This order contains the genus Tethya, which has been included in long-term ecological monitoring projects. I show that Tethya vacua is a junior synonym of Tethya californiana, and thus all Tethya populations known in California belong to a single species. Genetic data from California's only Timeidae, Timea authia, indicate that this species is in fact in the Tethyidae and is the third known member of the genus Tethytimea. I also describe the first member of the family Hemiasterellidae from the Eastern Pacific, Galaxia gaviotensis gen. nov. sp. nov. By combining field photographs, morphological taxonomy, and phylogenetic analysis of these samples, this work will facilitate future efforts to understand the evolution of this order and the ecological role of sponges in the California kelp forest.The genus Metura Walker, 1855 is revised, with all species figured, diagnosed, and redescribed. Two new species are described from Australia Metura phyllosacca sp. n. from south eastern Queensland and north-eastern New South Wales, and M. falcata sp. n. from Lord Howe Island. [https://www.selleckchem.com/products/valaciclovir-hcl.html Valaciclovir] The species Oiketicus aristocosma Lower, 1908 is here recognised as Metura aristocosma (Lower, 1908) comb. n. The mature larval bags, diagnostic by way of their structure, are figured for all species. A key is provided for the adult males and larval bags of this genus. A brief discussion is included, outlining potential research directions.The fourteen described South American species of Heilus (Curculionidae, Molytinae, Molytini, Hylobiina) are reviewed for the first time. Eleven species are redescribed based on specimens (almost exclusively from Brazil) examined by us H. bistigma (Hustache, 1938), H. faldermanni (Boheman, 1836), H. fasciculatus (Boheman, 1843), H. freyreissi (Boheman, 1836), H. inaequalis (Boheman, 1836) [= type species of the genus], H. iniquus (Kirsch, 1874), H. myops (Boheman, 1836), H. ochrifer (Boheman, 1843), H. pupillatus (Olivier, 1790), H. rufescens (Boheman, 1836), and H. tuberculosus (Perty, 1832). Diagnoses of one additional Brazilian species, Heilus admixtus (Hustache, 1938), and two additional South American species, H. asperulus (Erichson, 1847), and H. inornatus (Kirsch, 1874), are presented based on the literature and by examination of images of the type material. Integument texture and the variations in the patterns of maculation are the main characteristics used for species identification. Geographic distribution, descriptions of male and female genitalia are provided for eleven redescribed species, together with habitus photographs, and an identification key to the fourteen described South American species.