Ennomos subsignaria
In 3 days ~10% in a week ~30%
Ennomos subsignaria, the elm spanworm moth, is a moth of the family Geometridae. The species was first described by Jacob Hübner in 1823. It is found in North America from Texas (south) to Alberta (northwest) and east to the Atlantic coast. It is recorded infrequently in Great Britain through accidental importation in asparagus.
The wingspan is 35–40 mm. They are on wing from late May to August. one generation per year. The larvae feed on elm, apple, birch, maple, and oak. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 2 | Toronto | 🇨🇦 Canada | |
| 3 | Chicago | 🇺🇸 United States | |
| 4 | Boston | 🇺🇸 United States | |
| 5 | Montreal | 🇨🇦 Canada | |
| 6 | Austin | 🇺🇸 United States | |
| 7 | New York City | 🇺🇸 United States | |
| 8 | Houston | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an Elm Spanworm Moth sighting in Minneapolis [Saint Paul] on a given day, based on 35 verified sightings from GBIF citizen-science data. It is the 210th most-seen of the 672 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
June and July
In those months about 10% of wildlife watchers report an Elm Spanworm Moth in Minneapolis [Saint Paul] on a given day, against under 5% in August to May, the lowest months. Those are among Minneapolis [Saint Paul]'s wettest months, with about 110 mm of rain a month against 20 mm in January.
Yes
Of the 8 cities where we can rate Elm Spanworm Moth sightings, Minneapolis [Saint Paul] has the highest daily chance: under 5%. Next come Toronto (Canada, under 5%) and Chicago (United States, under 5%).
Same family: Geometridae
The closest relatives of the Elm Spanworm Moth that you can see in Minneapolis [Saint Paul] (family Geometridae, Geometer Moths) are Chickweed Geometer Moth (about 10%), Lesser Maple Spanworm Moth (about 10%) and Fall Cankerworm Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Elm Spanworm Moth is recorded against all the insects logged in Minneapolis [Saint Paul] (35 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.
