Digrammia gnophosaria
In 3 days ~10% in a week ~20%
Digrammia gnophosaria, the hollow-spotted angle, is a species of moth of the family Geometridae. It is found in Illinois, Louisiana, Minnesota, New Jersey, North Carolina, Oklahoma, Texas and Wisconsin. The larvae feed on Salix species, including Salix babylonica. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Cypress National Preserve | 🇺🇸 United States | |
| 2 | Everglades National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Baltimore | 🇺🇸 United States | |
| 2 | Austin | 🇺🇸 United States | |
| 3 | Dallas | 🇺🇸 United States | |
| 4 | Houston | 🇺🇸 United States | |
| 5 | Chicago | 🇺🇸 United States | |
| 6 | Toronto | 🇨🇦 Canada | |
| 7 | Washington | 🇺🇸 United States | |
| 8 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Hollow-Spotted Angle sighting in Baltimore on a given day, based on 12 verified sightings from GBIF citizen-science data. It is the 374th most-seen of the 705 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
August
In that month about 10% of wildlife watchers report a Hollow-Spotted Angle in Baltimore on a given day, against under 5% in September to July, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Hollow-Spotted Angle sightings with a recorded time, and nearly all of them come between 6 pm and 6 am: it is mostly seen at night.
Yes
Of the 8 cities where we can rate Hollow-Spotted Angle sightings, Baltimore has the highest daily chance: under 5%. Next come Austin (United States, under 5%) and Dallas (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Hollow-Spotted Angle is recorded against all the insects logged in Baltimore (12 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.
