Development in a Southern California community east of Los Angeles is being stymied in order to protect an endangered species of fly. The Delhi Sands flower-loving fly — the sole fly on the Endangered Species List — is only known to breed in fine sand dunes about 60 miles from L.A., which are surrounded by freeways and encroaching development. The feds and developers are trying to reach agreement on land to designate as protected habitat for the fly.