Drasteria pallescens
In 3 days ~40% in a week ~60%
Drasteria pallescens, the cowhead arches, is a moth of the family Erebidae. The species was first described by Augustus Radcliffe Grote and Coleman Townsend Robinson in 1866. It is found in North America from Alberta and Saskatchewan south to Texas and Baja California.
The wingspan is about 35 mm. Adults are on wing in June in the north. Probably earlier southward. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Bend National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San Diego | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Paler Graphic sighting in Big Bend National Park on a given day, based on 50 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 54th most-seen of the 329 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 60%, if each day is a fresh chance.
September
In that month about 40% of wildlife watchers report a Paler Graphic in Big Bend National Park on a given day, against under 5% in July and October–February, the lowest months. That is one of Big Bend National Park's wettest months, with about 50 mm of rain against 10 mm in April.
Between midnight and 3 am
Across all the parks we cover, that three-hour window holds the most Paler Graphic sightings with a recorded time, and about 9 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Only Big Bend National Park, in our data
Big Bend National Park is the only park on Wallace's Line with enough records to rate Paler Graphic sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Erebidae
The closest relatives of the Paler Graphic that you can see in Big Bend National Park (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Bird Toxonprucha (about 20%), Lophocampa bicolor (about 10%) and Black Witch (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Paler Graphic is recorded against all the insects logged in Big Bend National Park (50 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.
