Macrothemis newtoni spec. nov., a new dragonfly from Brazil (Anisoptera: Libellulidae)

The new sp. is described and figured from a single $ (Manas, Amazonas, XI-1959). deposited in Museu Nacional, Rio de Janeiro. It fits well in the tesselata group of F. RIS (1913, Colins zool. de Selvs-Longchamps 15; 837-964. pi. 7 excl.) and is separated from the other spp. by the colour pattern of the metepisternum and metepimeron, the distribution of abdominal spots, the shape of the hamules, the number of spines of the hind femora and the morphology of the appendages.