  We consider Lorentz invariant scalar-tensor teleparallel gravity theories
with a Lagrangian built from the torsion scalar, a scalar field, its kinetic
term and a derivative coupling between the torsion and the scalar field. The
field equations of the theory are derived and the relation between the spin
connection and the antisymmetric part of the tetrad field equations is found
explicitly, which is an important consistency result for Lorentz invariant
teleparallel theories of gravity. Afterwards we study the behaviour of this
class of theories under conformal transformations and find that such
transformations map different theories in this class onto each other.
