Abstract
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.
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