 The cuticle in the anterior region is striated transversely whereas the rest of the body is unstriated and bears around 36 longitudinal ridges.The "Ostertaginae" are characterized by a reduced buccal capsule and square head, and well-developed copulatory bursa in the male.The genital cone ventrally bears two small slender papillae and dorsally bears two long slender papillae surrounded by an accessory bursal membrane.