Abstract
During various studies of freshwater quality, twenty-four species of Smicridea were collected in Bolivia. This brings to thirty-one the number of Smicridea species present in this country. Four belong to the subgenus Smicridea Mclachlan J Linnean Soc London Zool 11: 98-141, 1871, which is recorded for the first time for the country. Additionally, 16 species in the subgenus Rhyacophylax Muller Zool Anzeiger 2: 38-40, 1879, are also registered for the first time. Three species are new and described from males: Smicridea (Rhyacophylax) molinai sp. nov., Smicridea (Rhyacophylax) ruedamartinae sp. nov., and Smicridea (Smicridea) moyai sp. nov.