Rhinusa antirrhini
In 3 days ~10% in a week ~20%
Rhinusa antirrhini, known generally as toadflax seedhead weevil, is a species of true weevil in the family of beetles known as Curculionidae. Other common names include the toadflax capsule weevil and seed-gall weevil. Rhinusa antirrhini feeds on two species of toadflax, Dalmatian toadflax (Linaria dalmatica) and Yellow toadflax (Linaria vulgaris). Both of these host species are native to Europe, and are considered invasive in North America. Rhinusa antirrhini was accidentally introduced to North America in the early 1900s, and several populations were intentionally relocated within North America or imported from Europe in the 1990s to combat invasive Linaria growth. Rhinusa antirrhini is well adapted for the North American climate and has become well established, though it is not considered an effective biological control agent of Linaria species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Helsinki | 🇫🇮 Finland | |
| 2 | Saint Petersburg | 🇷🇺 Russia |
Rare
Under 5% of wildlife watchers report a Toadflax Seed Weevil sighting in Saint Petersburg on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 272nd most-seen of the 448 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Toadflax Seed Weevil in Saint Petersburg on a given day, so our monthly data shows no clear season.
Among the best
Of the 2 cities where we can rate Toadflax Seed Weevil sightings, Saint Petersburg ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Helsinki (Finland, under 5%).
Same family: Curculionidae
The closest relatives of the Toadflax Seed Weevil that you can see in Saint Petersburg (family Curculionidae, True Weevils) are Nettle Weevil (about 10%), Strawberry Root Weevil (about 10%) and Black Vine Weevil (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Toadflax Seed Weevil is recorded against all the insects logged in Saint Petersburg (8 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
