Molecular phylogeny of Geoplaninae (Platyhelminthes) challenges current classification: proposal of taxonomic actions Author Fernando Carbayo Author Marta Álvarez-Presas Author Cĺaudia T. Olivares Author Fernando P. L. Marques Author Eud Óxia M. Froehlich Author Marta Riutort text Zoologica Scripta 2013 42 508 528 journal article 10.5281/zenodo.399812 72c98004-b882-4508-a00c-c1e3ad27faaa 399812 C9E06103-0179-4739-AF18-A159097A3902 Genus Matuxia gen. n Etymology . Matuxia is a free association of the epithetic names matuta and tuxaua and the first name of Dr. Eudóxia Maria Froehlich, who described the two species of the new genus. The gender is female. Diagnosis . Geoplaninae with medium-sized body, 45– 120 mm in length; body slender, margins nearly parallel, dorsum and ventral side slightly convex; eyes monolobulat- ed, marginally arranged along the body; pharynx cylindrical; prostatic vesicle intrabulbar, bifurcated proximally and broadly communicated with an ejaculatory cavity inside penis papilla; penis papilla apparent, with dorsal insertion posterior to the ventral; male atrium not folded, separate from the female by a fold; ascending portion of the ovovitelline ducts lateral to the gonopore canal or to the female atrium, joining each other above it; genital canal dorsoanteriorly flexed, arising from the dorsal region of the female atrium; female atrium rounded, clothed with an epithelium with multilayered aspect. Distribution . States of Rio de Janeiro and Stao Paulo, in Brazil . Type species . Geoplana tuxaua E. M. Froehlich, 1955b Species of Matuxia . Matuxia tuxaua ( E. M. Froehlich, 1955b ) * Matuxia matuta ( E. M. Froehlich, 1955b ) *