Nephrotoma alterna
In 3 days ~10% in a week ~20%
Nephrotoma alterna is a species of large crane fly in the family Tipulidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Philadelphia | 🇺🇸 United States | |
| 2 | Boston | 🇺🇸 United States | |
| 3 | Chicago | 🇺🇸 United States | |
| 4 | New York City | 🇺🇸 United States | |
| 5 | Montreal | 🇨🇦 Canada | |
| 6 | Washington | 🇺🇸 United States | |
| 7 | Toronto | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a Nephrotoma alterna sighting in Philadelphia on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 402nd 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.
June
In that month about 10% of wildlife watchers report a Nephrotoma alterna in Philadelphia on a given day, against under 5% in July to May, the lowest months.
Yes
Of the 7 cities where we can rate Nephrotoma alterna sightings, Philadelphia has the highest daily chance: under 5%. Next come Boston (United States, under 5%) and Chicago (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Nephrotoma alterna is recorded against all the insects logged in Philadelphia (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.
