Revalidation of the genus Remartinia Navás, 1911, with the description of a new species and a key to the genera of neotropical Aeshnidae (Anisoptera)

The genus is revalidated and redefined, based mainly on peculiar characters of wing venation and male secondary genitalia of 4 spp., 3 of them removed from Coryphaeschna Wllmsn, 1903; viz. R. luteipennis (Burm., 1839) comb, n., i R. rufipennis (Kenn., 1941) comb. n. and R. secreta (Calv., 1952) comb.n. R. restricta sp. n. is described and illustrated (holotype 6: Brazil, Sao Paulo, Araras). A key to the genera of neotropical Aeshnidae is appended.