Stigmella intermedia
In 3 days ~20% in a week ~30%
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 |
With luck
About 10% of wildlife watchers report a Stigmella intermedia sighting in Boston on a given day, based on 72 verified sightings from GBIF citizen-science data. It is the 200th most-seen of the 1200 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
July to September
In those months about 10% of wildlife watchers report a Stigmella intermedia in Boston on a given day, against under 5% in October to June, the lowest months.
Yes
Of the 7 cities where we can rate Stigmella intermedia sightings, Boston has the highest daily chance: about 10%. Next come Philadelphia (United States, under 5%) and New York City (United States, under 5%).
Same genus: Stigmella
The closest relatives of the Stigmella intermedia that you can see in Boston (genus Stigmella) are Stigmella prunifoliella (about 10%) and Stigmella rosaefoliella (about 10%), 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 Boston (72 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.
