Heliothis phloxiphaga
In 3 days ~20% in a week ~30%
Heliothis phloxiphaga is a species of moth of the family Noctuidae. It is found in the United States and southern Canada. It feeds on a variety of plants, and the caterpillars are considered pests to certain trees, including Ulmus, Malus, and Prunus. Adults are on-wing during the summer.
Heliothis acesias and Heliothis australis were previously grouped with H. phloxiphaga. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Yosemite National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Denver | 🇺🇸 United States | |
| 2 | Sacramento | 🇺🇸 United States | |
| 3 | San Francisco | 🇺🇸 United States | |
| 4 | Los Angeles | 🇺🇸 United States | |
| 5 | Dallas | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Darker-Spotted Straw Moth sighting in Yosemite National Park on a given day, based on 14 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 116th most-seen of the 227 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
June to September
In those months about 10% of wildlife watchers report a Darker-Spotted Straw Moth in Yosemite National Park on a given day, against under 5% in October to May, the lowest months. Those are among Yosemite National Park's driest months, with about 25 mm of rain a month against 220 mm in January.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Darker-Spotted Straw Moth sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Yosemite National Park, in our data
Yosemite National Park is the only park on Wallace's Line with enough records to rate Darker-Spotted Straw Moth sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Darker-Spotted Straw Moth is recorded against all the insects logged in Yosemite National Park (14 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.
