A revision of all the species of the genus Thopeutica described or cited from the island of Mindanao (Philippines) is presented. Four species are described as new: T. (s. str.) cassolai sp. nov., T. (s. str.) intermedia sp. nov., T. (s. str.) maindai sp. nov. and Wiesner, 1992 syn. nov., and T. (s. str.) davaoensis Cassola & Ward, 2004 = T. (s. str.) anichtchenkoi Wiesner, 2015 syn. nov. In total, 12 species are confirmed for the fauna of this island; the previous citations of 4 other species from Mindanao are discussed and considered erroneous. A key to the species is provided. Color photographs of the habitus, the main diagnostic characters, and the variability of all species are presented.

The genus Trichocoptodera Louwerens, 1958 is downgraded to a subgenus of the genus Coptodera. This taxonomic change created a secondary homonym that has forced us to create the new name C. (T.) louwerensi as a replacement name for Trichocoptodera maculata Louwerens, 1958 nec C. (Coptoderina) maculata Dupuis, 1912. Four new species are described (Luzon, Mindanao) and C. (T.) extrema sp. nov. (Luzon). The following new synonymy and combination are established: 1965) comb. nov. = Lebia meinkeana Jedli & ccaron;ka, 1965; C. (T.) baumi Jedli & ccaron;ka, 1955 is placed into the subgenus Trichocoptodera. The species C. (T.) baumi is recorded for the first time in Brunei, Indonesia (Bali), the Philippines (Mindanao), and Vietnam. An overview of the morphological characteristics and diagnostic features of the subgenus Trichocoptodera is provided. An identification key and images of `the habitus and aedeagus are given.

The eastern Palearctic carabid beetle Synuchuscongruus (Morawitz, 1862) is recorded from Belarus, Latvia, and Poland. Images of habitus, morphological features, and aedeagi, as well as an updated key to the Synuchus species of Europe, are provided.

All species of the genus Syntomus described from the Oriental region are revised. Six species are excluded from this genus. A new species, S. mateui sp. nov., is described from India and Nepal. One subspecies, S. monticola curtus Andrewes, 1923, is elevated to species rank S. curtus (Andrewes, 1923) stat. nov. and redescribed. New combinations and a new synonymy are proposed: Dromius nagatomii Jedli & ccaron;ka, 1966 = Syntomus nagatomii (Jedli & ccaron;ka, 1966), comb. nov.; Syntomus quadripunctatus Metadromius hastatus (Andrewes, 1931), comb. nov. Lectotypes are designated for Metabletus monticola Andrewes, 1923 and Metabletus monticola var. curtus Andrewes, 1923. An identification key to oriental species of Syntomus is provided.

During the revision of the genus Coptodera Dejean, 1825, a new species from West Africa, belonging to the previously considered monotypic subgenus Coptoderinella Hansen, 1968 was discovered. The description of Coptodera (Coptoderinella) martinui sp. nov. and a redefined diagnosis of the subgenus are given in this work.

The known species of the tuberosus group of the genus Therates Latreille (Coleoptera: Cicindelidae) are redescribed. Therates rugosoangustoides Wiesner and Anichtchenko, new species, is described from northern Vietnam while T. horni Wiesner, 1988, new status, and T. pseudotuberosus Wiesner, 1988, new status, are elevated to species rank. Identification keys for the twelve groups of the genus Therates and for the eight species of the tuberosus group are provided. Lectotypes are designated for Therates tuberosus Fleutiaux, 1893, Therates angustatus Horn, 1902, Therates crebrepunctatus Horn, 1923, and Therates rugosoangustus Horn, 1929, to stabilize their nomenclature to single specimens.

The eastern Palearctic carabid beetle Synuchus congruus (Morawitz, 1862) is recorded from Belarus, Latvia, and Poland. Images of habitus, morphological features, and aedeagi, as well as an updated key to the Synuchus species of Europe, are provided.

This is the first part of a taxonomic revision of the Oriental and Southwest Asian species of the genus Coptodera. The examination of almost all known species has enabled me to divide the genus into distinct species groups. The diagnosis for three of them, the proksi, flexuosa and luzonensis is given in this work. Three species—C. (Coptoderina) cyanella Bates, 1869, C. (Coptoderina) subapicalis Putzeys, 1877 and C. (Coptoderina) taiwana—are downgraded to subspecies of Coptodera (Coptoderina) flexuosa Schmidt-Göbel, 1846. Some new synonymies are proposed: Coptodera sapaensis Kirschenhofer, 1994, syn. nov. = Coptodera (Coptoderina) eluta Andrewes, 1923; Coptodera sexguttata Horvatovich, 1976, syn. nov. = Coptodera viridana Jedlička, 1935, syn. nov. = Coptodera impicta Chaudoir, 1869, syn. nov. = C. flexuosa cyanella Bates, 1869. One new subspecies, C. flexuosa philippinensis ssp. nov., is described from the Philippines. Taxonomic status of Coptoderina esakii Nakane, 1956, incertae sedis, is discussed. Coptodera (Coptoderina) proksi Jedlička, 1963 is recorded for the first time from China (Yunnan), Coptodera (Coptoderina) eluta Andrewes, 1923 from Cambodia, and Coptodera (Coptoderina) shimianensis Kirschenhofer, 2012 from Myanmar.

The fully everted endophallus in the genus Tricondyla is studied and described for the first time. Also, the following new synonymies are established: Pseudotricondyla Naviaux, 2002 syn. nov. = Stenotricondyla Naviaux, 2002; T. (T.) aptera punctipennis Chevrolat, 1841 syn. nov. = T. (T.) aptera aptera (Olivier,1790); T. (T.) aptera lumawigi Wiesner, 1989 syn. nov. = T. (T.) ovicollis Motschulsky, 1864; T. (S.) cavifrons Schaum, 1862 syn. nov. = T. (S.) cyanipes Eschscholtz, 1829; T. (S.) gracilis Naviaux, 2002 syn. nov. = T. (S.) elongata Horn, 1906; T. (T.) huloti Naviaux, 2009 syn. nov. = T. (S.) cyanipes fuscilabris Mandl, 1964 = T. (S.) conicicollis Chaudoir, 1844. Tricondyla (S.) oblita Naviaux, 2002, syn. nov. = Tricondyla brunnipes Motschulsky, 1861. New subgeneric placement is proposed: T. (S.) elongata Horn, 1906; T. (S.) planiceps Schaum, 1862; T. (S.) gracilis Naviaux, 2002. One new species T. (T.) johnsoni sp. nov. is described from Mindanao. The taxonomic status of T. (S.) genieri Naviaux, 2008 is discussed. The species T. (S.) beccarii Gestro, 1874 is transferred from nominative subgenus to Stenotricondyla and together with T. (Stenotricondyla) doriai Gestro, 1874 excluded from the list of species of the Philippines. A key to the species is provided. Color photographs of the habitus, and diagnostic characters, including the variability of all species, are presented.

For the first time in the Philippines, cave surveys were carried out in search of cave beetles. In this paper we describe a new troglobite genus, Kweba gen. nov., with two new species K. magbabaya sp. nov. and K. diwata sp. nov. We describe a new subgenus: Trogloabacetus subgen. nov. of the genus Metabacetus Bates, 1892, with the addition of two new species, M. (T.) baltazarae sp. nov. and M. (T.) desideratus sp. nov. from various limestone caves of Mindanao Island. Anaulacus (s.str.) fasciatus (Schmidt-Goebel, 1846) is also reported from the cave habitats. A key to the new and related genera, images of habitus and genitalia, and distribution maps are provided.

The limited temporal completeness and taxonomic accuracy of species lists, made available in a traditional manner in scientific publications, has always represented a problem. These lists are invariably limited to a few taxonomic groups and do not represent up-to-date knowledge of all species and classifications. In this context, the Brazilian megadiverse fauna is no exception, and the Catalogo Taxonomico da Fauna do Brasil (CTFB) (http://fauna.jbrj.gov.br/), made public in 2015, represents a database on biodiversity anchored on a list of valid and expertly recognized scientific names of animals in Brazil. The CTFB is updated in near real time by a team of more than 800 specialists. By January 1, 2024, the CTFB compiled 133,691 nominal species, with 125,138 that were considered valid. Most of the valid species were arthropods (82.3%, with more than 102,000 species) and chordates (7.69%, with over 11,000 species). These taxa were followed by a cluster composed of Mollusca (3,567 species), Platyhelminthes (2,292 species), Annelida (1,833 species), and Nematoda (1,447 species). All remaining groups had less than 1,000 species reported in Brazil, with Cnidaria (831 species), Porifera (628 species), Rotifera (606 species), and Bryozoa (520 species) representing those with more than 500 species. Analysis of the CTFB database can facilitate and direct efforts towards the discovery of new species in Brazil, but it is also fundamental in providing the best available list of valid nominal species to users, including those in science, health, conservation efforts, and any initiative involving animals. The importance of the CTFB is evidenced by the elevated number of citations in the scientific literature in diverse areas of biology, law, anthropology, education, forensic science, and veterinary science, among others.

In this work we describe a new species from the Philippines (Luzon Island). Archicolliuris albolineata sp. n. is allied to A. tenuis from Borneo and Palawan, and can be distinguished by having the much longer elytral white stripe and the wider pronotum. Three species, Mimocolliuris (Paramimocolliuris) insulana Habu, 1979; Ophionea (s. str.) celebensis Baehr, 1996 and Ophionea (Procasnoidea) foersteri Bouchard, 1903, are recorded for the first time in the Philippines. Some new nomenclatural acts are here proposed: Colliuris philippinensis Donabauer, 1996 = Mimocolliuris philippinensis (Donabauer, 1996) n. comb.; Ophionea (Setophionea) ishiii hoashii Habu, 1961 = Ophionea (Setophionea) ishiii ishiii Habu, 1961 n. syn.; Casnoidea (s. str.) leytensis Baehr, 1996 = Ophionea (Setophionea) ishiii ishiii Habu, 1961 n. syn.; Ophionea (s. str.) bhamoensis Bates, 1892 = Ophionea (s. str.) bakeri Dupuis, 1913 n. syn.; Ophionea (s. str.) bhamoensis Bates, 1892 = Ophionea bhamoensis taiwanensis Terada & Wu, 2014 n. syn. Numerous taxonomic comments are also provided. Illustrations of the habitus of all the species are given, and new distributional data are provided.

The species of the subgenus Phrator Semenov, 1922 are reviewed, with six species now recognized. One species is downgraded to subspecies: O. multiguttatum depressum Klug, 1853 stat. nov. Some new synonymies are proposed Omophron variegatum boiteli Alluaud, 1935 syn. n. = Omophron variegatum sardoum Reitter, 1907 syn. n. = Omophron variegatum seurati Alluaud, 1935 syn. n. = Omophron (Phrator) variegatum Olivier, 1812; Omophron (Phrator) ethiopiensis Valainis, 2016 syn. nov. = O. multiguttatum (s.str) Chaudoir, 1850; and Omophron (Phrator) alluaudi Dupuis, 1913 syn. n. = O. vittulatum Fairmaire, 1894. The variability of all the treated species is discussed. A key to the species, together with new distributional data, maps of distribution, illustrations of the habitus and of the most important features are provided.

In 2000, Cleide Costa published a paper presenting the state of knowledge of the Neotropical Coleoptera, with a focus on the Brazilian fauna. Twenty-four years later, thanks to the development of the Coleoptera section of the Taxonomic Catalog of the Brazilian Fauna (CTFB - Catalogo Taxonomico da Fauna do Brasil) through the collaboration of 100 coleopterists from all over the globe, we can build on Costa's work and present an updated overview of the state of knowledge of the beetles from Brazil. There are currently 35,699 species in 4,958 genera and 116 families known to occur in the country, including representatives of all extant suborders and superfamilies. Our data show that the Brazilian beetle fauna is the richest on the planet, concentrating 9% of the world species diversity, with some estimates accounting to up to 15% of the global total. The most diverse family in numbers of genera is Cerambycidae (1,056 genera), while in number of species it is Chrysomelidae (6,079 species). Conotrachelus Dejean, 1835 (Curculionidae) is the most species-rich genus, with 570 species. The French entomologist Maurice Pic is the author who has contributed the most to the naming of species recorded from Brazil, with 1,794 valid names in 36 families, whereas the Brazilians Ubirajara R. Martins and Maria Helena M. Galileo are the only ones among the top-ten authors to have named species in the 21(st) century. Currently, approximately 144 new species of Brazilian beetles are described each year, and this average is projected to increase in the next decade to 180 species per year, or about one new Brazilian beetle every two days.

A new genus Acoptodera gen. n. is described to place Coptodera piligera Chaudoir, 1883 previously attributed to genus Trichocoptodera Louwerens, 1958, as well as new subgenus Pericalocephala subgen. n. to place remarkable new species from Vietnam: Acoptodera (Pericalocephala) paradoxa sp. n. By the presence of hairs on head, pronotum and elytra, new genus is similar with Trichocoptodera Louwerens, 1958, but can be easely distinguished by flattened pronotum with wide lateral margins and by rounded elytra with serrate edges and fringe of setae on the sides. The status and characters of genera thought to be near relatives of Coptodera genus-group, are briefly discussed. Images of habitus and genitalia are provided.

The Philippines species of Prothyma Hope, 1838 (Prothyma s.str., Genoprothyma Rivalier, 1964 and Parasymplecthyma subgen. nov.) are revised to include 12 species. Prothyma (Genoprothyma) rotundatocuprascens Horn, 1923, and Prothyma (Genoprothyma) confluenteangustata Horn, 1924, are elevated to species rank; Prothyma (Symplecthyma) claudinae Dheurle, 2012 is synonymized with Prothyma (Genoprothyma) tenuipenis Horn, 1934; and two species are described: Prothyma (Genoprothyma) masbateensis sp. nov. and Prothyma (Genoprothyma) miltonmedinai sp. nov. The subgenus Parasymplecthyma subgen. nov., its unique species Prothyma (Parasymplethyma) johnsoni sp. nov. are described. Keys to Prothyma subgenera and to the Philippines species are provided. Color photographs of the habitus and diagnostic characters, also showing their variability, are presented.

The Philippines species of Prothyma Hope, 1838 (Prothyma s.str., Genoprothyma Rivalier, 1964 and Parasymplecthyma subgen. nov.) are revised to include 12 species. Prothyma (Genoprothyma) rotundatocuprascens Horn, 1923, and Prothyma (Genoprothyma) confluenteangustata Horn, 1924, are elevated to species rank; Prothyma (Symplecthyma) claudinae Dheurle, 2012 is synonymized with Prothyma (Genoprothyma) tenuipenis Horn, 1934; and two species are described: Prothyma (Genoprothyma) masbateensis sp. nov. and Prothyma (Genoprothyma) miltonmedinai sp. nov. The subgenus Parasymplecthyma subgen. nov., its unique species Prothyma (Parasymplethyma) johnsoni sp. nov. are described. Keys to Prothyma subgenera and to the Philippines species are provided. Color photographs of the habitus and diagnostic characters, also showing their variability, are presented.

Species of the subgenus Omophron (s.str.) Latreille, 1802 occurring in the Afrotropical region are reviewed, with 19 species now recognized, including six species described as new: O. (s.str.) schuelei sp. n. (Zambia), O. (s.str.) secundum sp. n. (Burkina Faso, Senegal), O. (s.str.) mimeticum sp. n. (Namibia), O. (s.str.) muellerae sp. n. (Kenya, Tanzania), O. (s.str.) occultum sp. n. (RSA) and O. (s.str.) pallidum sp. n. (Mali). Omophron (s.str.) congoense Deleve, 1924 = O. (s.str.) capense congoense Deleve, 1924 stat. n. is downgraded as subspecies. Three new subspecies: O. (s.str.) capense pumilum ssp. n. (Angola, Namibia, Zambia), O. (s.str.) capense kmecoi ssp. n. (Namibia), and O. (s.str.) capense isolatum ssp. n. (Tanzania) are described. New synonymy, O. dominicense Chaudoir, 1868 syn. n. = O. (O.) capense Gory, 1833; O. (s.str.) dissimile Deleve, 1924 syn. n. = O. (s.str.) ghesquierei Deleve, 1924 syn. n. = O. (s.str.) severini Dupuis, 1911 is proposed. A key to the species, together with illustrations of their habitus and aedeagus, are provided. The distributional data provided include many new locality records.