A new cave-dwelling species of Charinus (Amblypygi: Charinidae) from northern Brazil.

We present the description and illustration of a new species within the genus Charinus Simon, 1892, discovered in a cave located in the state of Tocantins, situated in the northern region of Brazil. Charinus tocantinensis sp. nov.

The flattie spiders of the Selenops isopodus/ species group (Araneae: Selenopidae) with a review of Selenops/ records from Colombia.

Here we examine the species of the Selenops isopodus species group: S. isopodus Mello-Leitão, 1941, S. arikok Crews, 2011, and S.

Six new species of the spider genus Centroctenus Mello-Leitão from the Neotropical region (Ctenidae, Cteninae).

The species of the genus Centroctenus can be distinguished from other Ctenidae genera by the presence of a long tibiae and the absence of a retrolateral projection of the cymbium in the male palp, and by the presence of a rounded spermathecae in the female epigynum. The composition of this spider genus is herein expanded to eleven Neotropical species, with the description of six new species: Centroctenus dourados sp. n.

Charinus rocamadre (Amblypygi, Charinidae): description of the female, ultrastructure of the male and female gonopods, and mitochondrial DNA sequences.

Charinus rocamadre is the only species described and recorded from Colombia. It is know from only one male specimen collected from a cave in the Colombian Caribbean region. Herein, we describe the female of C.

Tenebriochernes, a new genus and species of Chernetidae (Arachnida: Pseudoscorpiones) from north-western Colombia, with ecological observationsp>.

A new pseudoscorpion genus, Tenebriochernes n. gen., with the type species T.