Corydalus texanus
In 3 days ~20% in a week ~40%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Zion National Park | 🇺🇸 United States | |
| 2 | Grand Canyon National Park | 🇺🇸 United States | |
| 3 | Sequoia and Kings Canyon National Parks | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Western Dobsonfly sighting in Sequoia and Kings Canyon National Parks on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 114th most-seen of the 161 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
June to August
In those months about 10% of wildlife watchers report a Western Dobsonfly in Sequoia and Kings Canyon National Parks on a given day, against under 5% in September to May, the lowest months. Those are among Sequoia and Kings Canyon National Parks's driest months, with about 25 mm of rain a month against 190 mm in January.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Western Dobsonfly sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
3rd of 3
Of the 3 parks where we can rate Western Dobsonfly sightings, Sequoia and Kings Canyon National Parks ranks 3rd at about 10%. The best odds are in Zion National Park (United States, about 20%) and Grand Canyon National Park (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Western Dobsonfly is recorded against all the insects logged in Sequoia and Kings Canyon National Parks (8 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.
