Romualdius scaber
In 3 days ~10% in a week ~20%
Romualdius scaber, known generally as the crusted root weevil or crusted grass weevil, is a species of broad-nosed weevil in the beetle family Curculionidae. It is found in Europe and North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Calgary | 🇨🇦 Canada | |
| 2 | Seattle | 🇺🇸 United States | |
| 3 | Saint Petersburg | 🇷🇺 Russia | |
| 4 | Vancouver | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a Crusted Root Weevil sighting in Calgary on a given day, based on 17 verified sightings from GBIF citizen-science data. It is the 122nd most-seen of the 256 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.
May
In that month about 10% of wildlife watchers report a Crusted Root Weevil in Calgary on a given day, against under 5% in June to April, the lowest months. That is one of Calgary's wettest months, with about 75 mm of rain against 15 mm in January.
Yes
Of the 4 cities where we can rate Crusted Root Weevil sightings, Calgary has the highest daily chance: under 5%. Next come Seattle (United States, under 5%) and Saint Petersburg (Russia, under 5%).
Same family: Curculionidae
The closest relatives of the Crusted Root Weevil that you can see in Calgary (family Curculionidae, True Weevils) are Raucous Broad-Nosed Weevil (about 10%), Pale Green Weevil (about 10%) and Strawberry Root Weevil (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Crusted Root Weevil is recorded against all the insects logged in Calgary (17 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.
