The discovery of new Chilean taxa revolutionizes the systematics of Geoplaninae Neotropical land planarians (Platyhelminthes: Tricladida) Author Almeida, Ana Laura Author Álvarez-Presas, Marta Author Carbayo, Fernando text Zoological Journal of the Linnean Society 2023 2022-11-07 197 4 837 898 http://dx.doi.org/10.1093/zoolinnean/zlac072 journal article 10.1093/zoolinnean/zlac072 0024-4082 010109AB-79F5-4E6D-909B-08BB1803E589 TRANSANDIPLANA ALMEIDA & CARBAYO GEN. NOV. Zoobank registration. urn: lsid: zoobank. org:act: 6A12E323-138D-4530-B1F5-0E7C62E7B969 Type species: Transandiplana graui Almeida & Carbayo sp. nov. Diagnosis: Geoplanini with a slender, small-sized body, about 25 mm in length. Creeping sole wide. Eyes dorsal, with scarce ventrolateral sensory depressions. Thickness of the cutaneous musculature relative to the body height, 6.7%. Main nervous system comprising multiple longitudinal cords. Testes surrounded by a covering of dark pigment and located at some distance anterior to the pharynx. Prostatic vesicle extrabulbar. Penis papilla well developed. Common ovovitelline duct located behind the female atrium and running anterodorsally to join the dorsoposterior region of the female atrium. Etymology: Transandiplana refers to the Trans- Andean location of the type species (east of the Andes mountains) with respect to most of the remaining members of the Geoplanini (western to the Andes), and the Latin term plana , flat, alluding to the flattened body. The gender is feminine. Distribution: Huasco, Región de Atacama , Chile .