Matuxia tymbyra
Matuxia tymbyra is a species of land planarian belonging to the subfamily Geoplaninae. It is found within Brazil.
Description
Matuxia tymbyra has an elongated body with parallel margins, observed to reach about 88 mm in length. The anterior tip of the body is rounded, while the posterior is pointed. The dorsal side of the body is a dark grey color with lighter margins and a light grey thin midline running down the dorsum. The ventral side is light grey with a dark anterior tip. Its eyes lack clear halos.No glandular margin is formed in the epidermis of the pre-pharyngeal region. The ovaries are pyramidal and lobated. The male atrium is almost entirely occupied by an asymmetrical, conical penis papilla; additionally, the male and female atria are separated by a dorsal fold.