ABSTRACT The taxonomic history of Bumba Pérez-Miles, Bonaldo & Miglio, 2014 is mainly based on the inclusion of the new species. Bumba have been characterized by the type IV urticating setae present, retrolateral process on male palpal tibia, palpal bulb resting in a ventral distal excavation of palpal tibia, metatarsus I passes between the two branches of tibial apophysis when flexed, presence of spiniform setae on prolateral and retrolateral sides of maxillae and coxae I-IV. In this paper we include the row of teeth (denticulate row) in the median region of the inferior prolateral keel in all male palps. This structure range from a residual tooth to a ridge of up to five teeth. Both, the denticulate row and the retrolateral process on male palpal tibia in males could be considered as putative synapomorphies for Bumba. Here, Homoeomma humile Vellard, 1924 is transferred to Bumba and redescribed, while the female is described for the first time. Bumba cabocla (Pérez-Miles, 2000) is synonymyzed with B. horrida (Schmidt, 1994). Bumba pulcherrimaklaasi (Schmidt, 1991) is transferred to Cyclosternum Ausserer, 1871. Four new species are described and illustrated: Bumba tapajos sp. nov. from state of Pará, Bumba cuiaba sp. nov. and Bumba rondonia sp. nov., both from states of Rondônia and Mato Grosso, respectively, and Bumba mineiros sp. nov. from Paraguay and the Brazilian states of Goiás, Mato Grosso and Mato Grosso do Sul. Diagnosis of B. horrida and B. lennoni are extended and figures of this species are presented.

O gênero Pycnothele Chamberlin, 1917 é revisado. As espécies brasileiras Pycnothele perdita Chamberlin, 1917, P. singularis (Mello-Leitão, 1934) e P. auronitens (Keyserling, 1891) são redescritas, diagnosticadas e ilustradas. As fêmeas de P. auronitens e P. singularis são descritas pela primeira vez e P. auripila (Mello-Leitão, 1946) do Uruguai, atualmente um sinônimo júnior de P. auronitens, é revalidada. Pycnothele piracicabensis (Piza, 1938) é transferida para Rachias Simon, 1892, do qual compartilha a morfologia das estruturas sexuais, restaurando a combinação original. Cinco espécies novas são propostas para o Brasil: Pycnothele rubra sp. nov., P. jatai sp. nov. e P. araraquara sp. nov., do estado de São Paulo, P. arapongas sp. nov., do estado do Paraná, and P. gauderio sp. nov., do estado de Rio Grande do Sul. Após esta revisão, o gênero passa a constar com dez espécies neotropicais. Mapas com a distribuição de todas as espécies é apresentado pela primeira vez e a ocorrência de espécies do gênero é ampliada para o estado do Paraná.

The genus Pycnothele Chamberlin, 1917 is revised. The Brazilian species Pycnothele perdita Chamberlin, 1917, P. singularis (Mello-Leitão, 1934) and P. auronitens (Keyserling, 1891) are redescribed, diagnosed and illustrated. The females of P. auronitens and P. singularis are described for the first time and P. auripila (Mello-Leitão, 1946) from Uruguay, currently a junior synonym of P. auronitens, is revalidated. Pycnothele piracicabensis (Piza, 1938) is transferred to Rachias Simon, 1892, with which it shares the morphology of the sexual structures, restoring the original combination. Five new species are proposed for Brazil: Pycnothele rubra sp. nov., P. jatai sp. nov. and P. araraquara sp. nov., from state of São Paulo, P. arapongas sp. nov., from state of Paraná, and P. gauderio sp. nov., from state of Rio Grande do Sul. After this revision the genus includes ten Neotropical species. Maps with distribution of all species is presented for the first time and the occurrence of species of the genus is enhanced for the Brazilian state of Paraná.