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Abstract
The genus Martarega comprises 15 species and nine of these have been recorded in northern Brazil. Martarega pydanieli sp. nov. from Rondônia, while Martarega nieseri sp. nov. and M. barcelos sp. nov. from Amazonas are described here. Six known species are recorded in the Brazilian Amazonian Region (Amazonas, Pará, Rondônia and Roraima): M. brasiliensis, M. chinai, M. gonostyla, M. membranacea, M. oriximinaensis, and M. uruguayensis. At the outset of this survey the genus Martarega of the Brazilian Amazonian Region held 12 species, but no specimens of M. mcateei, M. hungerfordi, and M. williamsi were collected in the regions sampled. Martarega brasiliensis is newly recorded from Roraima, which comprises the first record of members of this genus in this State. Martarega uruguayensis is newly recorded from Pará and Rondônia, while M. gonostyla from Rondônia. Distinct keys to males and females of Martarega occurring in this region, including these new species, are provided.
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Acknowledgements
We gratefully acknowledge Victor Py-Daniel (INPA) and Bento M. Mascarenhas (MPEG) for the loan of specimens; Ulysses C. Barbosa (INPA) for helping with the localities; Silvia Mazzucconi (Universidad de Buenos Aires, Argentina) for taxonomic assistance with M. mcateei; and Felipe F. F. Moreira (UFRJ) for assistance in the revision of the geographical distribution. The manuscript benefited from the comments of Nico Nieser (the Netherlands) and Ana L. Estévez (Argentina). This work was sponsored by The Brazilian Council of Scientific and Technological Development (CNPq) and by Fundation of Support for Research of the State of Amazonas (FAPEAM). Trips were made possible by IBAMA, PRONEX (Insetos aquáticos: biodiversidade, ferramentas ambientais e a popularização da ciência para melhoria da qualidade de vida humana no Estado do Amazonas), FAPEAM and CNPq, which have sponsored these activities.