Longistrongylus curvispiculum was recovered from free ranging sable (Hippotragus niger), addax (Addax nasomaculatus) and biesa oryx (Oryx beisa) on two ranches in central Texas (USA). These nematodes represented a small portion of the total abomasal worm burden dominated by Haemonchus contortus. Female L. curvispiculum easily could be confused with other ostertaginae, but the spicules of the males were diagnostic.