At https://www.inaturalist.org/flags if you choose Content Type = taxon, then press Filter, a taxon search pops up so you can search for just flags on Araneae. https://www.inaturalist.org/flags?utf8=✓&flagger_type=any&flagger_name=&flagger_user_id=&user_name=&user_id=&flaggable_type=Taxon&taxon_name=Araneae&taxon_id=47118&deleted=any&flags[]=inappropriate&flags[]=other&reason_query=&resolved=no&resolver_name=&resolver_user_id=&commit=Filter&utf8=✓&flagger_user_id=&commit=Filter
(see https://forum.inaturalist.org/t/show-taxon-filter-on-flags-page-before-committing-search/12452 for a request not to have to press that filter button first)