Locust (Salabhasana)
When this pose is demonstrated it resembles a locust (grasshopper) moving its rear ends up and down, hence the name.
Locust is one of the backward bend asanas usually performed in a sequence; first the Cobra is practiced, than the Locust followed by the Bow. Locust is a posture which turns the body out expanding the chest to face the world. It is a very stimulating, powerful and dynamic asana, one of the most demanding but also one of the most unnatural posture in Hatha yoga.