In the Corning Museum of Glass dictionary pages, they give a defintion under "diatreta" as (apparently) speficifc to Frederick Carder for pieces made by the lost wax process. The CMOG definitions give "Diatretum" for the "cage cup" type of vessels.
http://www.cmog.org/dynamic.aspx?id=262#dThe vase shown here does not seem to be of the "cage cup" type so maybe it is a Frederick Carder item?
But it seems to me to be open lattice worked as a self-supporting structure attached to the inner body only at the upper and lower sections - and perhaps that could have been formed by direct application of hot glass, progressively worked from the lower section to the upper, rather than by a lost
was wax process.
I think more detail is needed about how the lattice work is actually formed and how and where it is attached to the inner body.