Four new species of Crinopseudoa (Araneae: Corinnidae) from West Africa.

Four new species of Crinopseudoa are described from West Africa. Crinopseudoa kru sp. nov.

Discovery of three new species of Thiratoscirtus (Araneae: Salticidae: Thiratoscirtinae) from Central African rainforest.

Three new species of Thiratoscirtus are described from Salonga National Park, D.R. Congo: Thiratoscirtus iyomii (), T.

Grismadox elsneri sp. nov.a new species of ant-resembling sac spider from the Bolivian orocline, with indirect evidence of species-specific mimicry (Araneae: Corinnidae: Castianeirinae).

A new species of ant-resembling sac spider of the subfamily Castianeirinae, Grismadox elsneri sp. nov., is described from the Sub-Andean area of the Bolivian orocline.

Mazax akephaloi sp. nov.a new Neotropical spider species resembling headless Ectatomma ants (Araneae: Corinnidae: Castianeirinae).

A new ant-like spider species of the subfamily Castianeirinae, Mazax akephaloi sp. nov., representing the second species of Mazax recorded from South America, is described from the Bolivian orocline and the Paraguayan Chaco region.

A new species of Copa (Araneae: Corinnidae: Castianeirinae) from dry forests in the north west of Madagascar.

A new species of the castianeirine spider genus Copa Simon, 1885, is described from northwestern Mahamavo region in Madagascar. Copa sakalava sp. nov.

Contributions to the knowledge of Neotropical Castianeirinae (Araneae: Corinnidae): redescription of Castianeira spinipalpis Mello-Leito, 1945, with first description of the male, and description of a new Myrmecotypus O. Pickard-Cambridge, 1894 from the Bolivian Moxos plains.

Two Neotropical species of the subfamily Castianeirinae are treated herein. Castianeira spinipalpis Mello-Leito, 1945 was described from a single female specimen; we provide a redescription of the female and the male is described for the first time. The species is newly recorded from Paraguay and Bolivia.

Description of a new species of Myrmecotypus (Araneae: Corinnidae: Castianeirinae), the first of its genus known from Paraguay, with an updated key to species.

The castianeirine spider genus Myrmecotypus O. Pickard-Cambridge, 1894 is reported from Paraguay for the first time, with the description of a new species, Myrmecotypus mboitui sp. nov.