Epiblema otiosana
In 3 days ~10% in a week ~20%
Epiblema otiosana, the bidens borer moth, gets its common name from the genus Bidens which includes the food plants for the larva. An adults wingspan ranges from 12 to 20 millimetres (0.47 to 0.79 in). They range in North America from Maine and Ontario in the north, south to Florida and west to Kansas and Texas.
The caterpillars feed on the Common Beggar-Ticks Bidens frondosa, a plant of the Aster family (Asteraceae). Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Baltimore | 🇺🇸 United States | |
| 2 | Chicago | 🇺🇸 United States | |
| 3 | Boston | 🇺🇸 United States | |
| 4 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 5 | Toronto | 🇨🇦 Canada | |
| 6 | Washington | 🇺🇸 United States | |
| 7 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Bidens Borer Moth sighting in Chicago on a given day, based on 33 verified sightings from GBIF citizen-science data. It is the 316th most-seen of the 978 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.
August
In that month about 10% of wildlife watchers report a Bidens Borer Moth in Chicago on a given day, against under 5% in September to July, the lowest months.
Among the best
Of the 7 cities where we can rate Bidens Borer Moth sightings, Chicago ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Baltimore (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Bidens Borer Moth is recorded against all the insects logged in Chicago (33 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.
