Fig. 1. Steinernema scapterisci Nguyen & Smart. A)Spicules of the first generation male showing angular head, ribs and gubernaculum with anterior end bent upward. B) Variation in tail shape of first generation males. C) Tail of the second-generation male showing elongate spicule head. D) Variation in tail shape of second generation males. E) Entire body of the first generation male