Revisional notes on the genus Melucha (Hemiptera, Heteroptera, Coreidae)

Melucha grandicula sp. n. and M. perampla sp. n., (Hemiptera: Heteroptera: Coreidae: Coreinae: Nematopodini) are described from Bolivia, Colombia, Paraguay and Peru. Melucha quadrivittis Stål, 1862, stat. restit., is resurrected from synonymy under M. phyllocnemis (Burmeister, 1835). Melucha ruficornis Breddin, 1903, syn. n., is synonymized under M. lineatella (Fabricius, 1803). An identification key for the known species of Melucha Amyot & Serville, 1843 is given. New distributional records for some previously known species are added.