Tanypteryx hageni
In 3 days ~10% in a week ~30%
Tanypteryx hageni, commonly known as the black petaltail, is a species of dragonfly in the family Petaluridae. It is native to the Pacific Northwest of the North America and is one of only two members of the genus Tanypteryx. The other species lives in Japan. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Olympic National Park | 🇺🇸 United States |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Black Petaltail sighting in Olympic National Park on a given day, based on 11 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 105th most-seen of the 207 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 to August
In those months about 10% of wildlife watchers report a Black Petaltail in Olympic National Park on a given day, against under 5% in September to May, the lowest months. Those are among Olympic National Park's driest months, with about 55 mm of rain a month against 370 mm in November.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Black Petaltail sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Olympic National Park, in our data
Olympic National Park is the only park on Wallace's Line with enough records to rate Black Petaltail sightings: about 10% of wildlife watchers there report one on a given day.
Same order: Odonata
The closest relatives of the Black Petaltail that you can see in Olympic National Park (order Odonata, Dragonflies and Damselflies) are Paddle-Tailed Darner (about 10%) and Eight-Spotted Skimmer (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Black Petaltail is recorded against all the insects logged in Olympic National Park (11 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.
