Eudioctria media
In 3 days ~10% in a week ~30%
Eudioctria media is a species of robber flies in the family Asilidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Portland | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Pacific Longhorn Robber sighting in Portland on a given day, based on 24 verified sightings from GBIF citizen-science data. It is the 204th most-seen of the 507 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.
June and July
In those months about 10% of wildlife watchers report a Pacific Longhorn Robber in Portland on a given day, against under 5% in August to May, the lowest months. Those are among Portland's driest months, with about 35 mm of rain a month against 250 mm in December.
Only Portland, in our data
Portland is the only city on Wallace's Line with enough records to rate Pacific Longhorn Robber sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Pacific Longhorn Robber is recorded against all the insects logged in Portland (24 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.
