Magusa divaricata
In 3 days ~10% in a week ~20%
Magusa divaricata, the orbed narrow-wing, is a moth of the family Noctuidae. The species was first described by Augustus Radcliffe Grote in 1874. It is found from eastern Canada south through the Caribbean and Central America to Paraguay and Argentina. It is a migratory species, which travels north in late summer and fall.
The wingspan is 40 mm. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Bend National Park | 🇺🇸 United States | |
| 2 | Cumbres de Monterrey National Park | 🇲🇽 Mexico |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Austin | 🇺🇸 United States | |
| 2 | Monterrey | 🇲🇽 México | |
| 3 | Boston | 🇺🇸 United States | |
| 4 | Mexico City | 🇲🇽 México | |
| 5 | Chicago | 🇺🇸 United States | |
| 6 | San Antonio | 🇺🇸 United States | |
| 7 | Toronto | 🇨🇦 Canada | |
| 8 | Dallas | 🇺🇸 United States | |
| 9 | Houston | 🇺🇸 United States | |
| 10 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Variable Narrow-Wing sighting in Boston on a given day, based on 30 verified sightings from GBIF citizen-science data. It is the 512th 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.
October and November
In those months about 10% of wildlife watchers report a Variable Narrow-Wing in Boston on a given day, against under 5% in December to September, the lowest months.
Between midnight and 3 am
Across all the parks we cover, that three-hour window holds the most Variable Narrow-Wing sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
3rd of 10
Of the 10 cities where we can rate Variable Narrow-Wing sightings, Boston ranks 3rd at under 5%. The best odds are in Austin (United States, about 10%) and Monterrey (México, about 10%).
Same family: Noctuidae
The closest relatives of the Variable Narrow-Wing 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 Variable Narrow-Wing is recorded against all the insects logged in Boston (30 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.
