Pyractomena borealis
In 3 days ~10% in a week ~20%
Pyractomena borealis commonly known as the Spring tree-top flasher is a species of firefly in the beetle family Lampyridae. It is found in North America, where it has a very wide distribution, as it is known from Alberta east to the Maritime Provinces of Canada, and south to all US states east of the Mississippi River. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Congaree National Park | 🇺🇸 United States | |
| 2 | Great Smoky Mountains National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Philadelphia | 🇺🇸 United States | |
| 2 | Baltimore | 🇺🇸 United States | |
| 3 | Washington | 🇺🇸 United States | |
| 4 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Spring Treetop Flasher sighting in Washington on a given day, based on 31 verified sightings from GBIF citizen-science data. It is the 627th most-seen of the 1807 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 Spring Treetop Flasher in Washington on a given day, against under 5% in May to March, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Spring Treetop Flasher sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 4 cities where we can rate Spring Treetop Flasher sightings, Washington ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Philadelphia (United States, under 5%) and Baltimore (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Spring Treetop Flasher is recorded against all the insects logged in Washington (31 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.
