General shape and anterior region similar to other species of Steinernema. Excretory pore circular, anterior to nerve ring. Gonads amphidelphic, reflexed .
Eggs commonly develop and hatch inside the reproductive system.
Tail bluntly conical to dome-shaped with a short spine on the tip. Rectum and anus distinct. Similar to first generation but body smaller and tail longer. Testis single and reflexed. Spicules paired, heavy, symmetrical, curved, with ribs.