Sphex nudus
In 3 days ~20% in a week ~50%
Sphex nudus is a species of thread-waisted wasp in the family Sphecidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Washington | 🇺🇸 United States | |
| 2 | Baltimore | 🇺🇸 United States | |
| 3 | New York City | 🇺🇸 United States | |
| 4 | Philadelphia | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Sphex nudus sighting in Great Smoky Mountains National Park on a given day, based on 34 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 146th most-seen of the 822 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
August
In that month about 20% of wildlife watchers report a Sphex nudus in Great Smoky Mountains National Park on a given day, against under 5% in October to June, the lowest months.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Sphex nudus sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Great Smoky Mountains National Park, in our data
Great Smoky Mountains National Park is the only park on Wallace's Line with enough records to rate Sphex nudus sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Sphex nudus is recorded against all the insects logged in Great Smoky Mountains National Park (34 verified sightings from 2019 to 2026), 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.
