Arenivaga bolliana
In 3 days ~10% in a week ~20%
Arenivaga bolliana, known generally as the Boll's sand cockroach or Boll's sandroach, is a species of cockroach in the family Corydiidae. 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.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San Antonio | 🇺🇸 United States | |
| 2 | Mesa | 🇺🇸 United States | |
| 3 | Austin | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Boll’s Sandroach sighting in Austin on a given day, based on 34 verified sightings from GBIF citizen-science data. It is the 639th most-seen of the 1624 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.
March and April
In those months about 10% of wildlife watchers report a Boll’s Sandroach in Austin on a given day, against under 5% in May to February, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Boll’s Sandroach sightings with a recorded time, and nearly all of them come between 6 pm and 6 am: it is mostly seen at night.
Among the best
Of the 3 cities where we can rate Boll’s Sandroach sightings, Austin ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in San Antonio (United States, under 5%) and Mesa (United States, under 5%).
Same order: Blattodea
The closest relatives of the Boll’s Sandroach that you can see in Austin (order Blattodea, Cockroaches and Termites) are American Cockroach (about 10%), Surinam Cockroach (about 10%) and Pale-Bordered Field Cockroach (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Boll’s Sandroach is recorded against all the insects logged in Austin (34 verified sightings), 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.
