I added the url to exclude the tag, message was edited.)
&without_taxon_id=47224 to exclude butterflies
Please say if you have any questions, you need to add both parts in the end of your search url and it will show what you needed: https://www.inaturalist.org/observations?lrank=complex&place_id=any&taxon_id=47157&user_id=becksnyc&verifiable=any&without_taxon_id=47224