Phigalia plumogeraria
In 3 days ~10% in a week ~20%
Phigalia plumogeraria, the walnut spanworm moth, is a species of geometrid moth in the family Geometridae. The MONA or Hodges number for Phigalia plumogeraria is 6661. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sequoia and Kings Canyon National Parks | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sacramento | 🇺🇸 United States | |
| 2 | San Francisco | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Walnut Spanworm Moth sighting in Sacramento on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 293rd most-seen of the 386 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
January and February
In those months about 10% of wildlife watchers report a Walnut Spanworm Moth in Sacramento on a given day, against under 5% in March to December, the lowest months. Those are among Sacramento's wettest months, with about 95 mm of rain a month against almost none in July.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Walnut Spanworm Moth sightings with a recorded time, and nearly all of them come between 6 pm and 6 am: it is mostly seen at night.
Yes
Of the 2 cities where we can rate Walnut Spanworm Moth sightings, Sacramento has the highest daily chance: under 5%. Next come San Francisco (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Walnut Spanworm Moth is recorded against all the insects logged in Sacramento (7 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.
