Bibio femoratus
In 3 days ~10% in a week ~20%
Bibio femoratus, also known as the March fly or lovebug, is a species of fly in the family Bibionidae. It was first described by the German entomologist Christian Rudolph Wilhelm Wiedemann in 1820.Bibio femoratus is one of at least 90 types of March flies, which occur in the United States and Canada. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Boston | 🇺🇸 United States | |
| 2 | Philadelphia | 🇺🇸 United States | |
| 3 | Washington | 🇺🇸 United States | |
| 4 | New York City | 🇺🇸 United States | |
| 5 | Montreal | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a Lovebug sighting in Philadelphia on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 471st most-seen of the 632 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.
April
In that month about 10% of wildlife watchers report a Lovebug in Philadelphia on a given day, against under 5% in May to March, the lowest months.
Among the best
Of the 5 cities where we can rate Lovebug sightings, Philadelphia ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Boston (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Lovebug is recorded against all the insects logged in Philadelphia (7 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.
