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We present in the following an Errata Corrigenda for Abrantes et al. (2010) Table 2 and general counting. Furthermore, we include all additional records for Brazilian Collembola during 2010 and 2011 as an update for the species list. The update was made following the same methodology and criteria as Culik and Zeppelini (2003), and Abrantes et al. (2010). All data will fit the same table marked differently to be recognized at glance. The references presented here are restricted to the citations concerning the update only; therefore the references presented in Culik and Zeppelini (2003), and Abrantes et al. (2010) will not be repeated.

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Two new species of Seira Lubbock 1869 are described and illustrated. The males of these species show modifications in the fore legs, probably associated with sexual courtship and/or mating behavior. Despite the similarity of the modifications of the two species, they are not otherwise similar. Thus the similarity is due to convergence rather than homology. These are the first records of sexual dimorphism other than genital openings in Entomobryidae.

A new species of Seira Lubbock, S. bicolorcornuta sp. nov., from Alto do Moura, Pernambuco State, Brazil, is described and illustrated. The males of this species have conspicuous modifications on the first pair of legs. This condition and other morphological features indicate a clear relationship between S. bicolorcornuta sp. nov. and S. raptora Zeppelini & Bellini. The distribution and chaetotaxic patterns of both species are discussed.

Three new species of Seira Lubbock from Mataraca, Paraíba State, Brazil are described and illustrated, S. mataraquensis sp. nov., S. arenicola sp. nov. and S. pseudoannulata sp. nov. Evolutionary and taxonomic aspects of the dorsal chaetotaxy are discussed. The large number of Seira species recorded in Paraíba and the sympatric distribution of eight species in coastal sand dunes suggest that the Brazilian northeastern region is a hotspot of diversity for the genus.

Two new species of Seira Lubbock (Entomobryidae), S. praiana sp. nov. and S. potiguara sp. nov., are described and illustrated. Both species were collected on Brazilian coast. S. praiana sp. nov. has some similarities with S. americana Jacquemart and S. nunezae Christiansen & Bellinger while S. potiguara sp. nov. resembles S. brasiliana (Arlé) and S. proannulata (Bonet) in some aspects of the dorsal distribution of the macrochaetae. Seira is a very specious genus in Brazil, and with the addition of S. praiana sp. nov. and S. potiguara sp. nov., the number of recorded species for the country increase to 24.