Geoplana mogi is a species of land planarian belonging to the subfamily Geoplaninae.

[1] It is found in areas within the Atlantic Forest in the municipalities of São Paulo and Mogi das Cruzes, Brazil.

The dorsal side has a medium orange-ochre band running down the middle, flanked on each side by a thin whitish stripe; the whitish stripe is bordered on the outside by a black line, which is flanked by a grey band mottled with white.

The marginal band is often hidden from plain dorsal view due to the shape of the body.

[2] Aside from its coloration, it is distinguished from other members of Geoplana by having parenchymal muscle fibres that form a loose tube around the intestine, and the diameter of the muscular cylinder surrounding the ejaculatory duct being 1.3 times that of the duct.