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 MYOPLANA ALMEIDA & CARBAYO GEN. NOV. Zoobank registration: urn: lsid: zoobank. org:act: 0D7F9AA5-342D-45C0-BD60-D4F1D36B098E Type species: Myoplana Ʋeraluciae Almeida & Carbayo sp. nov. Diagnosis: Myoplanini with a small-sized, slender body about 25–32 mm in length. Creeping sole wide. Eyes marginal. Sensory pits present. Ventral longitudinal cutaneous musculature divided into two layers, the inner one sunken into the parenchyma and located between the two peripheral nerve plexuses. Thickness of the cutaneous muscle relative to the body height, 15–28%. Prostatic vesicle extrabulbar. Penis papilla small. Common ovovitelline duct dorsal to female atrium. Female genital canal projects anteriorly from the posterior region of the female atrium. Figure 24. Myoplana joaopauloi sp. nov. Photographs of the live holotype. A, dorsal view. B, dorsal view, with the posterior region upside down. C, convolute live holotype, showing haloes in the anterior margin. Scale bars not available. The specimen is approximately 30 mm long. Etymology: Myoplana is composed of the Greek μυς (muscle) and the Latin plana (flat), as a reference to the fact that the flatworm has elaborated muscular systems. The gender is feminine. Distribution: As for that of the tribe.