What are the chances of seeing a Macrophya formosa in Boston?
Rare
Under 5% of wildlife watchers report a Macrophya formosa sighting in Boston on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 783rd 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.
When is the best time to see a Macrophya formosa in Boston?
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Macrophya formosa in Boston on a given day, so our monthly data shows no clear season.
Where else can you see a Macrophya formosa?
Only Boston, in our data
Boston is the only city on Wallace's Line with enough records to rate Macrophya formosa sightings: under 5% of wildlife watchers there report one on a given day.
Where does the Macrophya formosa sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Macrophya formosa is recorded against all the insects logged in Boston (9 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.