Apologies, @thomaseverest I thought I had commented about this one... Now I realize I had never put my partial thoughts out at all.
The species japonicum has often been considered only a local form of M. lacustre, so it would surprise me if it ended up in a different genus (or even subgenus).
It was not included in the 2023 analysis of Bespalaya et al, but it was included in Lee & Ó Foighill, 2003.
https://academic.oup.com/zoolinnean/article/137/2/245/2632282 In that paper, it was in Musculium with M. miyadii, M. lacustre, M. partumeium, M. securis, and M. argentinum.
Unintended disagreements occur when a parent (B) is
thinned by swapping a child (E) to another part of the
taxonomic tree, resulting in existing IDs of the parent being interpreted
as disagreements with existing IDs of the swapped child.
Identification
ID 2 of taxon E will be an unintended disagreement with ID 1 of taxon B after the taxon swap
If thinning a parent results in more than 10 unintended disagreements, you
should split the parent after swapping the child to replace existing IDs
of the parent (B) with IDs that don't disagree.
Apologies, @thomaseverest I thought I had commented about this one... Now I realize I had never put my partial thoughts out at all.
The species japonicum has often been considered only a local form of M. lacustre, so it would surprise me if it ended up in a different genus (or even subgenus).
It was not included in the 2023 analysis of Bespalaya et al, but it was included in Lee & Ó Foighill, 2003.
https://academic.oup.com/zoolinnean/article/137/2/245/2632282
In that paper, it was in Musculium with M. miyadii, M. lacustre, M. partumeium, M. securis, and M. argentinum.