Phigalia titea
In 3 days ~10% in a week ~30%
Phigalia titea, the spiny looper or half-wing moth, is a species of moth in the family Geometridae. The species was first described by Pieter Cramer in 1780 (some sources give 1782). The average wingspan is about 34 mm. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Austin | 🇺🇸 United States | |
| 2 | Boston | 🇺🇸 United States | |
| 3 | Toronto | 🇨🇦 Canada | |
| 4 | Washington | 🇺🇸 United States | |
| 5 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 6 | Denver | 🇺🇸 United States | |
| 7 | Montreal | 🇨🇦 Canada | |
| 8 | San Antonio | 🇺🇸 United States | |
| 9 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Half-Wing Moth sighting in Toronto on a given day, based on 79 verified sightings from GBIF citizen-science data. It is the 273rd most-seen of the 1689 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.
March–April and June
In those months about 10% of wildlife watchers report a Half-Wing Moth in Toronto on a given day, against under 5% in May and July–February, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Half-Wing Moth sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
3rd of 9
Of the 9 cities where we can rate Half-Wing Moth sightings, Toronto ranks 3rd at under 5%. The best odds are in Austin (United States, about 10%) and Boston (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Half-Wing Moth is recorded against all the insects logged in Toronto (79 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.
