Abstract
Terrestrial flatworms (Geoplanidae, Tricladida, Platyhelminthes) are free living animals. They have a dorso-ventrally flattened body and measure a few centimetres in length. They live in humid environments on the soil, sheltered under fallen logs, rocks and litter.Approximately 170 Brazilian species are known. Most of them were described throughout the 20th century. Several species descri…