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 Washington on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 1188th most-seen of the 1807 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Bidens Borer Moth in Washington on a given day, so our monthly data shows no clear season.
Among the best
Of the 7 cities where we can rate Bidens Borer Moth sightings, Washington ranks 6th at under 5%, level with the leaders once rounded. The best odds are in Baltimore (United States, under 5%), Chicago (United States, under 5%) and Boston (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 Washington (10 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.
