Bug FAQToadflax Seed Weevil
Rhinusa antirrhini · Order: Coleoptera · Family: Curculionidae
The toadflax seed weevil feeds on Dalmatian toadflax and yellow toadflax, both European natives.
Source: Wikipedia
How to recognize it
Rhinusa antirrhini feeds on two toadflax species: Dalmatian toadflax and yellow toadflax.
Source: Wikipedia
Is it a pest in the house?
It is not regarded as an effective biological control agent for Linaria species.
Source: Wikipedia
Where it lives
The weevil thrives in the North American climate and is now well established.
Source: Wikipedia
What it eats
It feeds exclusively on Dalmatian toadflax and yellow toadflax.
Source: Wikipedia
Where it comes from
Its host plants, Dalmatian toadflax and yellow toadflax, are native to Europe.
Source: Wikipedia
Where it is found in the US
Recorded in 16 of 51 states and DC. Most records: Idaho, Alaska, Illinois, South Dakota, Massachusetts, New York, Wisconsin, Minnesota.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: introduced in United States; introduced in Canada. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
What plants does the toadflax seed weevil feed on?
It feeds on Dalmatian toadflax and yellow toadflax.
Source: Wikipedia
Same family (Curculionidae)
Green Immigrant Leaf WeevilPolydrusus formosusDamages trees, gardens or crops
Black Vine WeevilOtiorhynchus sulcatusDamages trees, gardens or crops
Nettle weevilPhyllobius pomaceusDamages trees, gardens or crops
Asian Oak WeevilCyrtepistomus castaneusDamages trees, gardens or crops
Strawberry Root WeevilOtiorhynchus ovatusDamages trees, gardens or crops
Common Leaf WeevilPhyllobius pyriDamages trees, gardens or cropsSources
- Wikipedia: https://en.wikipedia.org/wiki/Rhinusa_antirrhini
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-28 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-28.