Esophagus steinernematoid, procorpus cylindrical, metacorpus slightly swollen, isthmus distinct, basal bulb swollen with small valve. Nerve ring located in isthmus region of esophagus but position variable. Excretory pore located anterior to mid-esophagus. Excretory duct not forming elliptically-shaped structure present in females. Posterior part of body curved ventrally.
Body assumes a spiral shape when killed by minimal heat.
Gonad single, testis reflexed. A small aperture can be seen on ventral side close to tip of the blade. Each spicule has two internal ribs with variable termination point proximally. Spicules glide along gubernaculum in two grooves separated by a needle-shaped cuneus. Cloaca on a raised area bearing an anterior flap, seen easily when the spicules are protracted or retracted.