Corydalus texanus
In 3 days ~40% in a week ~70%
| # | 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 |
No species of the same family or order lives in Grand Canyon National Park, so these are its closest relatives here: other insects.
With luck
About 10% of wildlife watchers report a Western Dobsonfly sighting in Grand Canyon National Park on a given day, based on 32 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 25th most-seen of the 143 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
April
In that month about 30% of wildlife watchers report a Western Dobsonfly in Grand Canyon National Park on a given day, against under 5% in February and September–December, the lowest months. That is one of Grand Canyon National Park's driest months, with about 10 mm of rain against 40 mm in March.
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.
2nd of 3
Of the 3 parks where we can rate Western Dobsonfly sightings, Grand Canyon National Park ranks 2nd at about 10%. The best odds are in Zion National Park (United States, about 20%).
GBIF citizen-science records
It is estimated from how often the Western Dobsonfly is recorded against all the insects logged in Grand Canyon National Park (32 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.
