Rhagoletis suavis
In 3 days ~10% in a week ~20%
Rhagoletis suavis, also known as the walnut husk maggot, is a species of tephritid or fruit fly in the family Tephritidae. This fly is closely related to, but not to be confused with, Rhagoletis juglandis, or the walnut husk fly. It occurs in North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Toronto | 🇨🇦 Canada | |
| 2 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 3 | Philadelphia | 🇺🇸 United States | |
| 4 | Boston | 🇺🇸 United States | |
| 5 | Chicago | 🇺🇸 United States | |
| 6 | Washington | 🇺🇸 United States | |
| 7 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Walnut Husk Maggot Fly sighting in Boston on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 1063rd most-seen of the 1200 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 Walnut Husk Maggot Fly in Boston on a given day, so our monthly data shows no clear season.
Among the best
Of the 7 cities where we can rate Walnut Husk Maggot Fly sightings, Boston ranks 4th at under 5%, level with the leaders once rounded. The best odds are in Toronto (Canada, under 5%), Minneapolis [Saint Paul] (United States, under 5%) and Philadelphia (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Walnut Husk Maggot Fly is recorded against all the insects logged in Boston (5 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.
