Crypticerya rileyi
In 3 days ~10% in a week ~20%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Saguaro National Park | 🇺🇸 United States |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Riley's Giant Scale Insect 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.
September and October
In those months about 10% of wildlife watchers report a Riley's Giant Scale Insect in Saguaro National Park on a given day, against under 5% in November to August, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Riley's Giant Scale Insect sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Saguaro National Park, in our data
Saguaro National Park is the only park on Wallace's Line with enough records to rate Riley's Giant Scale Insect sightings: under 5% of wildlife watchers there report one on a given day.
Same order: Hemiptera
The closest relatives of the Riley's Giant Scale Insect that you can see in Saguaro National Park (order Hemiptera, True Bugs, Hoppers, Aphids, and allies) are Leafhopper Assassin Bug (about 10%), Large Milkweed Bug (about 10%) and Smoketree Sharpshooter (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Riley's Giant Scale Insect 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.
