Alcaeorrhynchus grandis
In 3 days ~40% in a week ~70%
Alcaeorrhynchus grandis is a species of the family Pentatomidae. Also known as giant strong-nosed stink bug, Alcaeorrhynchus grandis can be found through Brazil, Colombia, Mexico, and the southern United States. As a predator, this stink bug can follow frass trails created by prey. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Congaree National Park | 🇺🇸 United States | |
| 2 | Galápagos Islands | 🇪🇨 Ecuador |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | São Paulo | 🇧🇷 Brazil | |
| 2 | Buenos Aires | 🇦🇷 Argentina | |
| 3 | Houston | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Giant Strong-Nosed Stink Bug sighting in Congaree National Park on a given day, based on 14 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 67th most-seen of the 145 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
September
In that month about 40% of wildlife watchers report a Giant Strong-Nosed Stink Bug in Congaree National Park on a given day, against under 5% in August and December–May, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Giant Strong-Nosed Stink Bug sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Giant Strong-Nosed Stink Bug sightings, Congaree National Park has the highest daily chance: about 10%. Next come Galápagos Islands (Ecuador, about 10%).
Same family: Pentatomidae
The closest relatives of the Giant Strong-Nosed Stink Bug that you can see in Congaree National Park (family Pentatomidae, Stink Bugs) are Brochymena myops (about 10%) and Florida Predatory Stink Bug (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Giant Strong-Nosed Stink Bug is recorded against all the insects logged in Congaree National Park (14 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.
