Ophiogomphus severus
In 3 days ~30% in a week ~50%
Ophiogomphus severus is a species of dragonfly in the family Gomphidae. It is commonly known as the pale snaketail. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Grand Teton National Park | 🇺🇸 United States | |
| 2 | Yellowstone National Park | 🇺🇸 United States | |
| 3 | Glacier National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Pale Snaketail sighting in Yellowstone National Park on a given day, based on 36 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 30th most-seen of the 160 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
July and August
In those months about 20% of wildlife watchers report a Pale Snaketail in Yellowstone National Park on a given day, against under 5% in October to June, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Pale Snaketail sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 3 parks where we can rate Pale Snaketail sightings, Yellowstone National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Grand Teton National Park (United States, about 10%).
Same order: Odonata
The closest relatives of the Pale Snaketail that you can see in Yellowstone National Park (order Odonata, Dragonflies and Damselflies) are Flame Skimmer (about 30%), Western Pondhawk (about 20%) and Common Whitetail (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Pale Snaketail is recorded against all the insects logged in Yellowstone National Park (36 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.
