Tetraleurodes perileuca
In 3 days ~10% in a week ~30%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Joshua Tree National Park | 🇺🇸 United States | |
| 2 | Yosemite National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San Francisco | 🇺🇸 United States | |
| 2 | Los Angeles | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Stanford's Whitefly sighting in Yosemite National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 192nd most-seen of the 227 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.
January
In that month about 30% of wildlife watchers report a Stanford's Whitefly in Yosemite National Park on a given day, against under 5% in March to October, the lowest months. That is one of Yosemite National Park's wettest months, with about 220 mm of rain against 25 mm in September.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Stanford's Whitefly 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 2 parks where we can rate Stanford's Whitefly sightings, Yosemite National Park ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Joshua Tree National Park (United States, under 5%).
Same order: Hemiptera
The closest relatives of the Stanford's Whitefly that you can see in Yosemite National Park (order Hemiptera, True Bugs, Hoppers, Aphids, and allies) are North American Common Water Strider (about 10%), Western Boxelder Bug (about 10%) and Small Milkweed Bug (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Stanford's Whitefly is recorded against all the insects logged in Yosemite 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.
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