Prochoerodes lineola
In 3 days ~10% in a week ~20%
Prochoerodes lineola, the large maple spanworm, is a moth of the family Geometridae. It is found from Nova Scotia to Florida, west to Texas and north to Alberta. The wingspan is 35–50 mm. They are on wing from April to October in the south and from July to September in the north.
The larvae feed on the leaves of a wide range of plants, including apple, birch, blueberry, cherry, currant, geranium, grass, maple, oak, poplar, soybean, sweetfern, walnut and willow. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 2 | Shenandoah National Park | 🇺🇸 United States | |
| 3 | Elk Island National Park | 🇨🇦 Canada | |
| 4 | Point Pelee National Park | 🇨🇦 Canada | |
| 5 | Acadia National Park | 🇺🇸 United States | |
| 6 | Gros Morne National Park | 🇨🇦 Canada |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Baltimore | 🇺🇸 United States | |
| 2 | Detroit | 🇺🇸 United States | |
| 3 | Austin | 🇺🇸 United States | |
| 4 | Washington | 🇺🇸 United States | |
| 5 | Philadelphia | 🇺🇸 United States | |
| 6 | Edmonton | 🇨🇦 Canada | |
| 7 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 8 | Boston | 🇺🇸 United States | |
| 9 | Chicago | 🇺🇸 United States | |
| 10 | Montreal | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a Large Maple Spanworm Moth sighting in New York City on a given day, based on 57 verified sightings from GBIF citizen-science data. It is the 347th most-seen of the 1623 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 Large Maple Spanworm Moth in New York City on a given day, so our monthly data shows no clear season.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Large Maple Spanworm Moth sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
12th of 15
Of the 15 cities where we can rate Large Maple Spanworm Moth sightings, New York City ranks 12th at under 5%. The best odds are in Baltimore (United States, about 10%), Detroit (United States, about 10%) and Austin (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Large Maple Spanworm Moth is recorded against all the insects logged in New York City (57 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.
