Stigmella intermedia
In 3 days ~10% in a week ~20%
Stigmella intermedia is a moth of the family Nepticulidae. It is found in North America in Ohio, Arkansas, Kentucky and Ontario. The wingspan is 3-3.5 mm. Usually there are two generations per year, with larvae maturing in July and overwintering, but occasionally a third generation appears.
The larvae feed on Rhus typhina and Rhus aromatica. They mine the leaves of their host plant. The loosened epidermis is bright green at first, later yellowish, and is marked by a broad blackish frass line nearly as broad as the mine. The larvae are very bright green. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Boston | 🇺🇸 United States | |
| 2 | Philadelphia | 🇺🇸 United States | |
| 3 | New York City | 🇺🇸 United States | |
| 4 | Washington | 🇺🇸 United States | |
| 5 | Miami | 🇺🇸 United States | |
| 6 | Toronto | 🇨🇦 Canada | |
| 7 | Chicago | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Stigmella intermedia sighting in Philadelphia on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 510th most-seen of the 632 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 Stigmella intermedia in Philadelphia on a given day, so our monthly data shows no clear season.
2nd of 7
Of the 7 cities where we can rate Stigmella intermedia sightings, Philadelphia ranks 2nd at under 5%. The best odds are in Boston (United States, about 10%).
Same order: Lepidoptera
The closest relatives of the Stigmella intermedia that you can see in Philadelphia (order Lepidoptera, Butterflies and Moths) are Monarch (about 30%), Black Swallowtail (about 30%) and Small White (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Stigmella intermedia is recorded against all the insects logged in Philadelphia (7 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.
