The abdomen ends in a pair of long cerci; females have a long, cylindrical ovipositor. Females do not have a real ovipositor, only a little more elongated telson. In some females, the sclerites are rolled into a flexible, telescopic ovipositor. Many Asilidae have long, tapering abdomens, sometimes with a sword-like ovipositor. Only females possess an ovipositor (modified to form a stinger); males cannot sting. The ovipositor is often modified into a stinger. The wood wasp ovipositor itself contains two interlocking valves. The female has a long, sharp, serrated ovipositor. Females (only) have a larger abdomen tipped with an ovipositor. Females have a long ovipositor, which should not be mistaken for a stinger. In all stinging Hymenoptera the sting is a modified ovipositor. A appendage means that it was used as an ovipositor (used to deposit eggs). The female lays her eggs by thrusting her ovipositor deep into the soil. The female has oviducts that carry the developed eggs from the ovaries to the ovipositor. The male grabs onto the female, and then grasps the female's ovipositor with his genitals.