Chapinaria, a new genus of Chilocorini (Coleoptera: Coccinellidae) from Tanzania and Zambia is described and illustrated. It is established for Endochilus meridionalis Sicard, 1929 (comb. nov.). Adult characters concerning similarities to other Chilocorini genera are discussed. Lecototype for Endochilus meridionalis Sicard is designated. Key to Afrotropical genera of Chilocorini is presented. A checklist to the known species of the tribe from Afrotropic Ecozone is also provided.

One hundred thirty-four morphological characters were scored and analysed for larvae of twenty-four species of Camiarinae and fourteen species of other subfamilies of Leiodidae to test the monophyly of Camiarinae and determine phylogenetic relationships within tribes and genera. Two main clades were obtained. Some members of Agyrtodini (Dasypelates gracilis, Eupelates transversestrigosus and both species of Dictydiella) form a clade together with Cholevinae, while the remaining representatives of Agyrtodini, Neopelatopini and Camiarini were recovered as branches within a clade that also includes taxa from Catopocerinae, Leiodinae and Platypsyllinae. Within the latter clade, some of the Agyrtodes species, Zearagytodes and Ragytodina are grouped together, whereas Agyrtodes atropos and Cholevomorpha were placed as a sister group of all members of Paragyrtodes, Neopelatopini, Camiarini, Leiodinae, Platypsyhinae, and Catopocerinae. Camiarini and Neopelatopini except Myrmicholeva were recovered in one clade together with Agathidiini, whereas Myrmicholeva is sister to Platypsyllinae (Catopocerinae Pseudoliodini) and this clade is the sister to Paragyrtodes. The analysis strongly supports the view that Camiarinae and its tribes are paraphyletic, grouping possibly ancient and relict taxa that are or have evolved from ancestors of the other subfamilies. However, the obtained clades have low support values, and the results cannot be used to propose a robust, phylogeny-based classification of Leiodidae. The results support previously postulated informal groups, and provide a new insight into relationships within the subfamily Camiarinae as well as the family.

A species checklist of described larvae is provided for world Leiodidae, and the habitus and the most interesting or previously unknown larval characters of Camiarinae are illustrated and discussed.

Abrolophus norvegicus (Thor, 1900) is redescribed. An extended diagnosis of Abrolophus Berlese, 1891 (= Hauptmannia Oudemans, 1910) is provided for all active life instars. Description of larva of A. norvegicus is based on specimens obtained by experimental rearing from field-collected females. Variability of morphological characters is evaluated for offspring of a single female, within a particular population and between different populations originating from Europe. The specific status of A. norvegicus is discussed. A female of A. norvegicus, collected in northern Germany is selected as neotype. Hauptmannia silesiacus Haitlinger, 1986, syn. now., Abrolophus neobrevicollis Zhang et Goldarazena, 1996, syn. nov., Hauptmannia striata Saboori, Šundic et Pešic, 2011, syn. nov., Hauptmannia dagmarae Haitlinger, 2012, syn. nov. are considered synonyms of Ritteria norvegica Thor, 1900. Data on habitat specificity and phenology of A. norvegicus as well as on its development are given.

Survey and collecting of the Iranian tydeoid mite fauna over the last 40 years, including the present data, have resulted in a collective list of 43 species of Triophtydeidae, Iolinidae and Tydeidae, covering 12 of the 30 provinces. During 2008–2010, a faunistic survey of tydeoid mites was made in Razavi Khorasan Province of Iran. As a result, four tydeoid species were stated as new for fauna of the study area and one species (Tydeus calabrus) — new for the Iranian fauna. Three other ones (of the genera Neopronematus and Tydeus) are new to science. The new taxa are described and a key to the species of Neopronematus is proposed. A checklist of Iranian tydeoids is provided.

The genus Cosmophasis Simon, 1901 is reviewed for Australia and some localities in Papua New Guinea, southeast Asia and the Pacific islands. The study is based on new and type material and includes 24 species, of which 17 are described as new: C. baehrae, C. banika, C. colemani, C. courti, C. darwini, C. harveyi, C. hortoni, C. humphreysi, C. kairiru, C. kohi, C. lungga, C. motmot, C. panjangensis, C. rakata, C. sertungensis, C. tavurvur and C. trobriand. C. micans (L. Koch, 1880) and C. modesta (L. Koch, 1880), described from Australia, have neither been located in the collections nor in field and have not been included here, however, according to their original description, both seem to be valid species. Amycus tristriatus L. Koch, 1880 and Maevia ombria Thorell, 1877 are reinstated as Cosmophasis tristriatus (L. K.) and C. ombria (Th.), respectively. C. marxii (Thorell, 1890) is synonymised with C. ombria (Thorell, 1877) and C. muralis Berry, Beatty & Prószyński, 1997 with C. tristriatus (L. Koch, 1880). For all species complete documentation is given, including diagnoses, the data on intraspecific variation and the maps of actual and predicted distributions. The key for species is not included because the genitalic characters are too complex to describe concisely. Based upon morphological criteria, five species groups are proposed. Remarks on relationships and distribution of Cosmophasis are given.