Selenia alciphearia
In 3 days ~20% in a week ~40%
Selenia alciphearia, known generally as the northern selenia or brown-tipped thorn, is a species of geometrid moth in the family Geometridae. It is found in North America. The MONA or Hodges number for Selenia alciphearia is 6817. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Bear Rainforest | 🇨🇦 Canada |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Brown-Tipped Thorn sighting in Great Bear Rainforest on a given day, based on 21 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 74th most-seen of the 235 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.
April
In that month about 20% of wildlife watchers report a Brown-Tipped Thorn in Great Bear Rainforest on a given day, against under 5% in July to March, the lowest months.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Brown-Tipped Thorn sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
Only Great Bear Rainforest, in our data
Great Bear Rainforest is the only park on Wallace's Line with enough records to rate Brown-Tipped Thorn sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Geometridae
The closest relatives of the Brown-Tipped Thorn that you can see in Great Bear Rainforest (family Geometridae, Geometer Moths) are Variable Carpet Moth (about 10%), Peppered Moth (about 10%) and Western Carpet (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Brown-Tipped Thorn is recorded against all the insects logged in Great Bear Rainforest (21 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.
