Phrynotettix robustus
In 3 days ~20% in a week ~50%
Phrynotettix robustus, known generally as the robust toad lubber or robust toad hopper, is a species of lubber grasshopper in the family Romaleidae. It is found in North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Bend National Park | 🇺🇸 United States |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Robust Toad Lubber sighting in Big Bend National Park on a given day, based on 14 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 122nd most-seen of the 329 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.
June
In that month about 20% of wildlife watchers report a Robust Toad Lubber in Big Bend National Park on a given day, against under 5% in January–March and July–August, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Robust Toad Lubber sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Only Big Bend National Park, in our data
Big Bend National Park is the only park on Wallace's Line with enough records to rate Robust Toad Lubber sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Robust Toad Lubber is recorded against all the insects logged in Big Bend 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.
