Pyreferra hesperidago
In 3 days ~10% in a week ~20%
Pyreferra hesperidago, the mustard sallow, is a species of cutworm or dart moth in the family Noctuidae. It is found in North America. The MONA or Hodges number for Pyreferra hesperidago is 9929. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Boston | 🇺🇸 United States | |
| 2 | Washington | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Mustard Sallow sighting in Boston on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 1063rd most-seen of the 1200 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 Mustard Sallow in Boston on a given day, so our monthly data shows no clear season.
Yes
Of the 2 cities where we can rate Mustard Sallow sightings, Boston has the highest daily chance: under 5%. Next come Washington (United States, under 5%).
Same family: Noctuidae
The closest relatives of the Mustard Sallow that you can see in Boston (family Noctuidae, Cutworm Moths and Allies) are Large Yellow Underwing (about 10%), Armyworm Moth (about 10%) and American Copper Underwing (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Mustard Sallow is recorded against all the insects logged in Boston (5 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.
