Promachus bastardii
In 3 days ~10%
Promachus bastardii, the false bee-killer, is a species of robber flies (insects in the family Asilidae). Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a False Bee-Killer sighting in Chicago on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 751st most-seen of the 978 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 False Bee-Killer in Chicago on a given day, so our monthly data shows no clear season.
Among the best
Of the 4 cities where we can rate False Bee-Killer sightings, Chicago ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Houston (United States, under 5%) and Austin (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the False Bee-Killer is recorded against all the insects logged in Chicago (9 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.
