On Nesticus from Meridional South America (Araneae, Nesticidae)
Five new species of Nesticus Thorell, 1869 are described: N. potreiro, N. taim from southern Brazil; N. brignolii from southern Brazil, Argentina and Uruguay; N. calilegua from southern Brazil and…
On Nyetnops, a New Genus of the Spider Subfamily Nopinae (Araneae, Caponiidae) from Brazil
A new caponiid genus is described to contain a remarkable new species, N. guarani from Brazil, which have a bizarrely elongated male palp and have the subsegmented tarsi typical of the Nopinae, but lack the additional leg modifications found in those taxa.
Redescription of Misumenoides athleticus comb. nov. (Araneae: Thomisidae), wrongly assigned to the philodromid genus Petrichus
The presence of an epigynal hood, RTA long with simple base and modified apex, absence of tutaculum, and short setae on the surface of the carapace and abdomen corroborate that P. athleticus belongs to Misumenoides F.O.P.-Cambridge, 1900.
Revision of the Neotropical spider genus Berlandiella (Araneae, Philodromidae)
The spider genus Berlandiella Mello-Leitao, 1929 is revised and the three known species are revised and three new species are presented: B. magna and B. polyacantha are designated.
New record of nuptial gift observed in Trechalea amazonica (Araneae, Lycosoidea, Trechaleidae)
The first record of a nuptial gift in Trechalea amazonica F.O.P.-Cambridge, 1903, is presented and could be used in phylogenetic and evolutionary studies for this poorly studied spider family.
Notes on the predatory behavior and habitat of Trechalea biocellata (Araneae, Lycosoidea, Trechaleidae)
The predatory behavior and habitat preferences of Trechalea biocellata Mello-Leitao, 1926 are reported for the first time. Both, field and in the laboratory observations were made. This species…
Description of two new species of Naatlo (Araneae: Theridiosomatidae) from Brazil
Two news species from Brazil are described and illustrated and the presence of the epigynal flap in the females and the reduced conductor and the more complex embolic tip in the males is diagnosed.
On the Neotropical genus Cybaeodamus (Araneae, Zodariidae, Storeninae)
Four new species of the spider genus Cybaeodamus Mello-Leitao, 1938 are described and illustrated and all are considered as species inquirendae.
On the taxonomy of southern South American species of the wolf spider genus Allocosa (Araneae: Lycosidae: Allocosinae).
Three species of the genus Allocosa Banks, 1900 from southern South America are redescribed and a new species, A. marindia sp.
Taxonomic notes on the crab spider genus Tobias Simon, 1895 (Araneae, Thomisidae, Stephanopinae).
The males of Tobias caudatus Mello-Leitão, 1929 and Tobias pustulosus Simon, 1929 are described for the first time, females are redescribed and both sexes are illustrated. New distribution records…