Physocephala marginata
In 3 days ~10% in a week ~20%
Physocephala marginata is a species of thick-headed fly in the family Conopidae. It is a parasite of Anthophora abrupta bees, although pupation occurs only after death of the host bee. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Toronto | 🇨🇦 Canada | |
| 2 | Montreal | 🇨🇦 Canada | |
| 3 | Washington | 🇺🇸 United States | |
| 4 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Physocephala marginata sighting in Toronto on a given day, based on 32 verified sightings from GBIF citizen-science data. It is the 490th most-seen of the 1689 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 Physocephala marginata in Toronto on a given day, so our monthly data shows no clear season.
Yes
Of the 4 cities where we can rate Physocephala marginata sightings, Toronto has the highest daily chance: under 5%. Next come Montreal (Canada, under 5%) and Washington (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Physocephala marginata is recorded against all the insects logged in Toronto (32 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.
