Thyanta custator
In 3 days ~10% in a week ~20%
Thyanta custator, commonly known as the red-shouldered stink bug, is a species of stink bug in the family Pentatomidae. It is found in North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Saguaro National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Dallas | 🇺🇸 United States | |
| 2 | Mesa | 🇺🇸 United States | |
| 3 | Austin | 🇺🇸 United States | |
| 4 | Phoenix | 🇺🇸 United States | |
| 5 | Montreal | 🇨🇦 Canada | |
| 6 | Salt Lake City | 🇺🇸 United States | |
| 7 | San Antonio | 🇺🇸 United States | |
| 8 | Denver | 🇺🇸 United States | |
| 9 | Toronto | 🇨🇦 Canada | |
| 10 | Houston | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Red-Shouldered Stink Bug sighting in Saguaro National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 300th most-seen of the 354 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 and August–September
In those months about 10% of wildlife watchers report a Red-Shouldered Stink Bug in Saguaro National Park on a given day, against under 5% in July and October–May, the lowest months.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Red-Shouldered Stink Bug sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Only Saguaro National Park, in our data
Saguaro National Park is the only park on Wallace's Line with enough records to rate Red-Shouldered Stink Bug sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Red-Shouldered Stink Bug is recorded against all the insects logged in Saguaro National Park (5 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.
