Syrphus opinator, Taxa Only, Exact Match: 2 Treatments

Syrphus opinator			Montoya, Augusto L., 2016, FAMILY SYRPHIDAE, Zootaxa 4122 (1), pp. 457-537 : 512	512
Syrphus opinator			Zuparko, Robert L., 2015, Annotated Checklist of California Encyrtidae (Hymenoptera), Zootaxa 4017 (1), pp. 1-126 : 84	84