Description of the female of P. pauferrense Rodrigues, Cizauskas & Rheims, 2018 and three new species of Paracymbiomma Rodrigues, Cizauskas & Rheims, 2018 (Araneae: Prodidomidae) from Brazil.

In this paper, we describe three new species of Paracymbiomma Rodrigues, Cizauskas & Rheims, 2018 and the female of P. pauferrense Rodrigues, Cizauskas & Rheims, 2018. Two species are restricted to the iron caves of the Carajás Speleological Unit, in the state of Pará, Brazil: Paracymbiomma pepita sp.

Taxonomic revision of the orb weaving spider genus Plato Coddington, 1986 (Araneae: Theridiosomatidae) with the description of three new species.

The genus Plato Coddington, 1986 is revised and now contains twelve Neotropical species. The male of Plato bicolor (Keyserling, 1886) is described for the first time from the state of Amazonas in Brazil. Three new species are described: Plato omnipraesens n.

Description of nine new species of the Neotropical spider genus Epicratinus Jocqué & Baert, 2005 (Araneae: Zodariidae) from Brazil.

Nine new species of the Neotropical spider genus Epicratinus Jocqué & Baert, 2005 are described. Epicratinus includes now 25 species, all with male and female descriptions. An identification key for all species of the genus and maps for new species.

Cayenniola albaserrata n. sp., a geographical relict from a Brazilian hotspot of subterranean biodiversity and the first troglobitic Priodesmini (Polydesmida: Chelodesmidae: Chelodesminae).

A new troglobitic species of Chelodesmidae, Cayenniola albaserrata n. sp., from the Água Clara cave system, Caatinga Domain, Bahia, Brazil is described.