For the purpose of testing phylogenetics software, we're using synthetic sequence data (i.e., it's computer generated, and there's no actual biological organism with that e.g. DNA sequence). For real-world biological sequence data, we would say the sequence belongs to a "species" or "taxon" (or "taxonomic group"), but this feels inaccurate since there is no actual species or taxon.
Question: Can we describe synthetic biological sequence data as belonging to a "species" or "taxon"?
I'm wondering if this is standard practice, despite the synthetic nature of the data.