Drasteria pallescens
In 3 days ~10%
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 |
Rare
Under 5% of wildlife watchers report a Paler Graphic sighting in San Diego on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 519th most-seen of the 693 insects we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Paler Graphic in San Diego on a given day, so our monthly data shows no clear season.
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 San Diego, in our data
San Diego is the only city on Wallace's Line with enough records to rate Paler Graphic sightings: under 5% 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 San Diego (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Salt Marsh Moth (about 10%), Western Tussock Moth (about 10%) and Painted Tiger Moth (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 San Diego (10 verified sightings), 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.
