Notes and synonymy on the Neotropical moth genus Xylodonta Becker (Notodontidae, Nystaleinae), with special reference to the species occurring in Brazil

The Notodontidae genus Xylodonta Becker, 2014 is represented by 20 species, five of them new, four from Brazil: X. giffordi sp. n., X. imitans sp. n., X. ochreibasis sp. n., and X. robustoides sp. n.; and one from Guatemala: X. monzoni sp. n.; one species: X. pythia (Druce, 1894) stat. rev., is removed from the synonymy with X. xylinata (Walker, 1865), three: X. placida (Schaus, 1911) syn. n. and X. riparia (Druce, 1906) syn. n. (=X. guarana (Schaus, 1892)) and X. patrickgoodwilliei Chacón, 2017 syn. n. (=X. xylinata (Walker, 1865)) are synonymized; and one: N. russula (Dognin, 1909) comb. n. is transferred to Nycterotis Felder. Diagnosis and illustrations of adults and genitalia of all species recorded from Brazil are provided to allow their identification.