Pepsis thisbe
In 3 days ~20% in a week ~40%
Pepsis thisbe, also known as Thisbe's tarantula-hawk wasp, is a species of spider wasp in the family Pompilidae. Females are 32-44 mm long with a dark blue body and orange wings. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Grand Canyon National Park | 🇺🇸 United States | |
| 2 | Zion National Park | 🇺🇸 United States | |
| 3 | Joshua Tree National Park | 🇺🇸 United States | |
| 4 | Saguaro National Park | 🇺🇸 United States | |
| 5 | Big Bend National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Phoenix | 🇺🇸 United States | |
| 2 | Mesa | 🇺🇸 United States | |
| 3 | Los Angeles | 🇺🇸 United States | |
| 4 | Mexico City | 🇲🇽 México | |
| 5 | San Antonio | 🇺🇸 United States | |
| 6 | San Diego | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Thisbe's Tarantula-Hawk Wasp sighting in Joshua Tree National Park on a given day, based on 16 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 82nd most-seen of the 190 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
June and July
In those months about 20% of wildlife watchers report a Thisbe's Tarantula-Hawk Wasp in Joshua Tree National Park on a given day, against under 5% in August and November–April, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Thisbe's Tarantula-Hawk Wasp 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 5 parks where we can rate Thisbe's Tarantula-Hawk Wasp sightings, Joshua Tree National Park ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Grand Canyon National Park (United States, about 10%) and Zion National Park (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Thisbe's Tarantula-Hawk Wasp is recorded against all the insects logged in Joshua Tree National Park (16 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.
