In the patch notes (full release) there are no Thaumaturge weapons listed.
They are listed as "2-handed conjurer's arm".

For example, the "Teak Cane" and "Scintillant Staff" are both marked as "wo-handed Conjurer's Arm", but I believe the "Teak Cane" is the conjurer's and the "Scintillant staff" is the thaumaturge's.