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Hi,
Of course it could be (and probably is) Metalimnobia sp.
The 7mm "pupae" on your picture is only 7mm PART of pupae. Further 13mm is lacking on your photo.
I breeded it (from under the bark of Fungus). See the picture I attached in this thread - some imago have full "pupae" pinned below - you can see and compare the length.:


I have of course specimens that had smaller pupae (about 15mm).

Cheers
Robert Zoralski