Pete -
This statement has been sticking with me since I read it. It might be me but I don't see any relationship between that statement and how this relates to taxon concepts. In a concept-based system you could easily have two different maps for Puma concolor. Whether Felis concolor is included is not relevant because nomenclatural synonyms have no bearing on the circumscription. They are both names for the same type.
There may be two different concepts (circumscriptions) published for Aedes triseriatus. It could be quite legit for a different (objective synonym only) name like Oclerotatus triseriatus to refer to that same concept. So in that sense, there is a rationale for different scientific names to be able to reference the same concept to meet that requirement of the example you cite. But in zoology these examples aren't even considered different names and the rule of priority would prevent truly different (heterotypic names) from referring to the same type so the use cases for different scientific names being able to refer to a single concept ID are quite limited.
Mapping objective (homotypic) synonymy provides the basis for providing a single map for those examples you cite but it's not using true concept-based principles.
Best, David
Frankly I think it would be an improvement if we could get maps etc that combine Aedes triseriatus / Ochlerotatus triseriatus into one map and Felis concolor and Puma concolor into a different single map. :-)
Respectfully,
- Pete