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ABSTRACT 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 Catálogo Taxonômico 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.

Resumen Se proponen 12 actos taxonómicos en Gonyleptoidea. En Agoristenidae son propuestas 2 sinonimias específicas en los géneros Avima Roewer y Ocoita González-Sponga. Medellinia bordoni Soares y Avram syn. nov. es removida de Holocranaus Roewer (Cranaidae) y considerado sinónimo junior subjetivo de Rhopalocranaus bordoni Šilhavý; Stygnicranella Caporiacco syn. nov. y attr. nov. es aquí transferido de Cranaidae a Manaosbiidae, y es considerado como sinónimo subjetivo junior de Rhopalocranus Roewer; R. flaviaculeatus Caporiacco es considerado como sinónimo subjetivo senior de S. pizai Caporiacco syn. nov. En Cosmetidae, Paecilaema sexlineatum Goodnight y Goodnight es considerado sinónimo senior subjetivo de Paecilaema vitatta González-Sponga, actualmente Paecilaema gonzalezi Kury syn. nov. En Cranaidae, Phareicranaus francourbanii Avram es transferido de su sinónimo actual, P. benedictoi Soares et Avram comb. nov. es revalidada y considerada como nomen inquirendum, y 4 sinonimias son propuestas en Phareicranaus Roewer: P. capayitaensis González-Sponga syn. nov., P. francourbanii Avram syn. nov. and P. guaricoensis González-Sponga syn. nov., son considerados sinónimos junior subjetivos de P. albilineatus (Roewer); P. leonensis González-Sponga syn. nov. es considerada un sinónimo junior subjetivo de P. curvipes (Roewer). El uso de datos distribucionales de algunos opiliones venezolanos en estudios biogeográficos es discutido.

Abstract Twelve taxonomic acts are proposed in Gonyleptoidea. In Agoristenidae, 2 specific synonymies are proposed in Avima Roewer and Ocoita González-Sponga. Medellinia bordoni Soares and Avram syn. nov. is transferred from Holocranaus Roewer (Cranaidae) to Manaosbiidae attr. nov. and considered a junior subjective synonym of Rhopalocranaus bordoni Šilhavý; Stygnicranella Caporiacco syn. nov. and attr. nov. is here transferred from Cranaidae to Manaosbiidae, and considered a junior subjective synonym of Rhopalocranaus Roewer; R. flaviaculeatus Caporiacco is considered a senior subjective synonym of S. pizai Caporiacco syn. nov. In Cosmetidae, Paecilaema sexlineatum Goodnight and Goodnight, is considered a senior subjective synonym of Paecilaema vitatta González-Sponga syn. nov., currently Paecilaema gonzalezi Kury syn. nov. In Cranaidae, Phareicranaus francourbanii Avram is transferred from its current synonymy, P. benedictoi Soares & Avram comb. nov. is revalidated and considered as a nomen inquirendum, and 4 synonymies are proposed in Phareicranaus Roewer: P. capayitaensis González-Sponga syn. nov., P. francourbanii Avram syn. nov., and P. guaricoensis González-Sponga syn. nov. are considered as junior subjective synonyms of P. albilineatus (Roewer); and P. leonensis González-Sponga syn. nov. is considered a junior subjective synonym of P. curvipes (Roewer). The use of distributional data of some Venezuelan harvestmen in biogeographic studies is discussed.

Roquettea decioi sp. nov. is described from Carolina, in the Brazilian state of Maranhão. It is the seventh species in Roquettea Mello-Leitão, 1931 and the eighth species of Opiliones recorded from the state. Roquettea decioi sp. nov may be characterized by ocularium low, with median depression, pedipalpal tibia without pseudo-finger forming chela and massive divergent protuberances on scutal area III.

Index code	Element
ti	article title
au	author
kw	article keywords
subject	subject (title words, abstract and keywords)
ab	abstract
ta	journal short title (e.g. Cad. Saúde Pública)
journal_title	journal full title (e.g. Cadernos de Saúde Pública)
la	publication language code (e.g. pt - Portuguese, es - Spanish)
type	document type
pid	publication identifier
publication_year	publication year of publication
sponsor	sponsor
aff_country	country code of the author's affiliation
aff_institution	author affiliation institution
volume	article volume
issue	article issue
elocation	elocation
doi	DOI number
issn	journal ISSN
in	SciELO colection code (e.g. scl - Brasil, col - Colômbia)
use_license	article usage license code

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