Paraba franciscana is a medium-sized land planarian with an elongatedbody reaching up to in length and in width while crawling. The dorsal surface has a homogeneously dark-grey to black color with a whitemedian longitudinal stripe of about 8 to 12% of the body width. The ventral side is white to light-grey, usually with a median longitudinal light-grey stripe. The numerous eyes are distributed in a single row along the body margins in the first millimetres and posteriorly spread to the dorsum, usually occupying up to 30% of the body width on each side, but some eyes can be close to the median line.