Hersiliidae is a relatively small spider family that is easily distinguished by the very long posterior lateral spinnerets. It is distributed worldwide and, although quite diverse in other zoogeographical regions, is represented by only 11 species in the Neotropics. Hersiliidae was recently revised and of the 11 species, three are known solely from one sex. Yabisi Rheims & Brescovit, 2004 includes only two species, one of which is known solely from the female. The genus is extremely rare and both species are known from only a few specimens. In this paper, the male of Yabisi guaba Rheims & Brescovit, 2004 is described and illustrated and an extended diagnosis is given for the genus. The male of this species is distinguished from its congener by the palps, with laminar embolus having the same width throughout its length and median apophysis narrow and distally rounded.

Macrinus Simon, 1887 can be diagnosed by the twisted tegulum with a distal retrolateral laminar projection and the fulcrum with a prolateral serrated projection on the male palp and by the copulatory ducts with an anterior, fused hyaline part and a median long and sclerotized part ending at a slightly rounded spermathecae in the female epigynum. The genus currently includes three species: Macrinus succineus Simon, 1887 and M. jaegeri Rheims, 2007, from Brazil, and M. pollexensis (Schenkel, 1953) from Venezuela. In this paper I describe two new species: Macrinus bambuco sp. nov. and Macrinus calypso sp. nov. The first is based on a male from Lomalinda, Colombia, and is distinguished from the remaining Macrinus by the presence of a retrolateral triangular projection on the tegulum of the male palp. The second is based on a male from Charlotteville, Tobago, and is distinguished from the remaining species by a small retrolateral process at the base of the RTA. In addition, Olios mohavensis Fox, 1937, from the Mojave Desert in California, USA, is transferred to Macrinus. The species can be distinguished from the remaining species of the genus by a median anterior constriction on the anterior margin of the median septum of the female epigynum. It's distribution range is extended to southwestern North America, in the Nearctic region. No Macrinus species is known to occur in Central America.

Quatro espécies novas são descritas para a Amazônia oriental: Drymusa tobyi sp. nov., D. philomatica sp. nov., D. colligata sp. nov. e D. spelunca sp. nov., todas do estado do Pará, Brasil.

Four new species of Drymusa Simon, 1891 are described from the Oriental Amazonia, namely: Drymusa tobyi sp. nov., D. philomatica sp. nov., D. colligata sp. nov., and D. spelunca sp. nov., all from the state of Pará, Brazil.

Oito novas espécies de Scytodes Latreille, 1804 são descritas: Scytodes iara sp. nov. e S. caure sp. nov. do Amazonas; S. mapinguari sp. nov. do Amazonas e de Roraima; S. curupira sp. nov. do Amazonas e de Rondônia; S. saci sp. nov. de Roraima; e S. jurupari sp. nov., S. tinkuan sp. nov. e S. caipora sp. nov. do Acre. A fêmea de S. altamira Rheims & Brescovit, 2000 é descrita e novos registros são apresentados para S. auricula Rheims & Brescovit, 2000, S. fusca Walckenaer, 1837, S. longipes Lucas, 1844, S. martiusi Brescovit & Höfer, 1999, S. piroca Rheims & Brescovit, 2000, S. romitii Caporiacco, 1947 e S. vieirae Rheims & Brescovit, 2000.

Eight species of Scytodes Latreille, 1804 are newly described: Scytodes iara sp. nov. and S. caure sp. nov. from Amazonas; S. mapinguari sp. nov. from Amazonas and Roraima; S. curupira sp. nov. from Amazonas and Rondônia; S. saci sp. nov. from Roraima; and S. jurupari sp. nov., S. tinkuan sp. nov. and S. caipora sp. nov. from Acre. In addition, the female of S. altamira Rheims & Brescovit, 2000 is described and new records are presented for S. auricula Rheims & Brescovit, 2000, S. fusca Walckenaer, 1837, S. longipes Lucas, 1844, S. martiusi Brescovit & Höfer, 1999, S. piroca Rheims & Brescovit, 2000, S. romitii Caporiacco, 1947 and S. vieirae Rheims & Brescovit, 2000.