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The article presents a study on the seasonal migration of Serracutisoma proximum, a species of harvestman, with use of caves as winter refuge in a sub-tropical area. The harvestman is endemic to the South and Southeast of São Paulo state, Brazil. The results of the study indicate that S. proximum uses the cave only as a winter shelter and the behavior may be categorized as an annual round-way migration. The species returns to the forest to reproduce during the wet and warm season.

Parapaulipalpina lobata Gnaspini, Moraes & Gomyde, new species (Coleoptera: Leiodidae: Cholevinae: Ptomaphagini) is described from Pará State, Northern Brazil. This is the first record of the genus from Brazil. The genus otherwise includes four species described from Northern South America (Colombia, Ecuador, Peru, Venezuela). The apex of the male metatibia of P. lobata sp. nov. is widened and flattened, which is unique in the tribe as a whole, and diagnostic for the species. A key for all known species is provided.

Adelopsis diabolica, new species (Coleoptera: Leiodidae: Cholevinae: Ptomaphagini) is described from Boracéia Biological Station, São Paulo State, Brazil. The apex of the male aedeagus is uniquely armed and diagnostic. Females have slightly expanded protarsomeres (less expanded than those of males), a very rare feature in the family.