Neighbor-joining tree of the mock and the zero-radius operational taxonomic units (ZOTU) sequences. Sequences are highlighted based on species. The red bar represents a ZOTU without a taxonomic match, and the text in red represents a haplotype without a ZOTU match. Two of the ZOTUs (i.e., ZOTU10 and ZOTU14) that did not have a taxonomic match against the mock sample sequences clustered with the A. decemseta sequences.