Eudioctria sackeni
In 3 days ~10% in a week ~20%
Eudioctria sackeni is a species of robber flies in the family Asilidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Sacken Longhorn Robber sighting in Portland on a given day, based on 19 verified sightings from GBIF citizen-science data. It is the 249th 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 20%, if each day is a fresh chance.
June and July
In those months about 10% of wildlife watchers report a Sacken 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.
3rd of 3
Of the 3 cities where we can rate Sacken Longhorn Robber sightings, Portland ranks 3rd at under 5%. The best odds are in Vancouver (Canada, about 10%) and Seattle (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Sacken Longhorn Robber is recorded against all the insects logged in Portland (19 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.
