We use the sewing procedure in the operator formalism to construct the {ital N}-point {ital g}-loop vertex {ital V}{sub {ital N};{ital g}} for the ({ital b},{ital c}) system in superstring theory. After computing explicitly the lowest picture-changed states, we saturate {ital V}{sub {ital N};{ital g}} with them showing that the reparametrization ghost contribution to {ital g}-loop superstring amplitudes is just the same as in bosonic string theory.