I would agree that 'Night Wings' is a tetraploid, although the ploidy appears to be missing in the AHS database. If 'Night Wings' was the pod parent to 'Jupiter LIght House' then that would basically make it also a tetraploid.
[Although there are theoretical ways that a daylily might produce a seed from an ovule without any contribution from the pollen it is highly unlikely and that would be the way that a tetraploid could produce a diploid.]
