Urocerus albicornis
In 3 days ~10% in a week ~30%
Urocerus albicornis (white-horned horntail) is a species of horntail native to North America. This species has occasionally been introduced into Europe and Japan. It lives near conifer trees. It is black, with whiteish antennae, spots on either side of the head, and two bands on each leg. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 2 | Acadia National Park | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a White-Horned Horntail sighting in Acadia National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 347th most-seen of the 405 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.
July and September
In those months about 10% of wildlife watchers report a White-Horned Horntail in Acadia National Park on a given day, against under 5% in August and October–June, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most White-Horned Horntail sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 2 parks where we can rate White-Horned Horntail sightings, Acadia National Park ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Great Smoky Mountains National Park (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the White-Horned Horntail is recorded against all the insects logged in Acadia 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.
