Mesothea incertata
In 3 days ~20% in a week ~40%
Mesothea is a monotypic moth genus in the family Geometridae described by Warren in 1901. Its only species, Mesothea incertata, the day emerald or plain emerald, was first described by Walker in 1863. It is found in North America.
The MONA or Hodges number for Mesothea incertata is 7085. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Jasper National Park | 🇨🇦 Canada |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Day Emerald sighting in Jasper National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 72nd most-seen of the 88 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
May
In that month about 20% of wildlife watchers report a Day Emerald in Jasper National Park on a given day, against under 5% in June to April, the lowest months.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Day Emerald sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Jasper National Park, in our data
Jasper National Park is the only park on Wallace's Line with enough records to rate Day Emerald sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Geometridae
The closest relatives of the Day Emerald that you can see in Jasper National Park (family Geometridae, Geometer Moths) are White-Striped Black (about 10%), Pale Beauty (about 10%) and Peppered Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Day Emerald is recorded against all the insects logged in Jasper National Park (5 verified sightings from 2019 to 2026), 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.
