Petrophila bifascialis
In 3 days ~10% in a week ~20%
Petrophila bifascialis, the two-banded petrophila moth, is a moth in the family Crambidae. It was described by Robinson in 1869. It is found in North America, where it has been recorded from Nova Scotia to Florida, west to Texas and north to Ontario.
The wingspan is between 11 and 24 mm. Adults are on wing from late May to September. The larvae are aquatic, feeding on diatoms and algae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Dallas | 🇺🇸 United States | |
| 2 | Austin | 🇺🇸 United States | |
| 3 | Montreal | 🇨🇦 Canada | |
| 4 | San Antonio | 🇺🇸 United States | |
| 5 | Toronto | 🇨🇦 Canada | |
| 6 | Washington | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Two-Banded Petrophila sighting in San Antonio on a given day, based on 13 verified sightings from GBIF citizen-science data. It is the 425th most-seen of the 697 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 November
In those months about 10% of wildlife watchers report a Two-Banded Petrophila in San Antonio on a given day, against under 5% in October and December–August, the lowest months.
4th of 6
Of the 6 cities where we can rate Two-Banded Petrophila sightings, San Antonio ranks 4th at under 5%. The best odds are in Dallas (United States, about 10%), Austin (United States, about 10%) and Montreal (Canada, about 10%).
GBIF citizen-science records
It is estimated from how often the Two-Banded Petrophila is recorded against all the insects logged in San Antonio (13 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.
