Patalene olyzonaria
In 3 days ~10% in a week ~30%
Patalene olyzonaria, the juniper-twig geometer, is a moth of the family Geometridae. It is found from Quebec and New Hampshire to Florida, west to Texas, north to Wisconsin. The wingspan is 21–25 mm. Adults are on wing from April to November. There are two to three generations per year.
The larvae feed on Juniperus species and at times Thuja occidentalis and possibly Pinus. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Philadelphia | 🇺🇸 United States | |
| 2 | Baltimore | 🇺🇸 United States | |
| 3 | Washington | 🇺🇸 United States | |
| 4 | New York City | 🇺🇸 United States | |
| 5 | Boston | 🇺🇸 United States | |
| 6 | Miami | 🇺🇸 United States | |
| 7 | Toronto | 🇨🇦 Canada |
With luck
About 10% of wildlife watchers report a Juniper Geometer Moth sighting in Baltimore on a given day, based on 19 verified sightings from GBIF citizen-science data. It is the 252nd 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 30%, if each day is a fresh chance.
June, August and October
In those months about 10% of wildlife watchers report a Juniper Geometer Moth in Baltimore on a given day, against under 5% in July, September and November–May, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Juniper Geometer Moth sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Among the best
Of the 7 cities where we can rate Juniper Geometer Moth sightings, Baltimore ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Philadelphia (United States, about 10%).
Same family: Geometridae
The closest relatives of the Juniper Geometer Moth that you can see in Baltimore (family Geometridae, Geometer Moths) are Common Tan Wave (about 10%), Large Lace-Border Moth (about 10%) and Large Maple Spanworm Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Juniper Geometer Moth is recorded against all the insects logged in Baltimore (19 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.
