Betasyrphus serarius
In 3 days ~10% in a week ~20%
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Betasyrphus serarius sighting in Sydney on a given day, based on 18 verified sightings from GBIF citizen-science data. It is the 360th most-seen of the 742 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 Betasyrphus serarius in Sydney on a given day, against under 5% in August to May, the lowest months.
Yes
Of the 2 cities where we can rate Betasyrphus serarius sightings, Sydney has the highest daily chance: under 5%. Next come Tokyo (Japan, under 5%).
Same family: Syrphidae
The closest relatives of the Betasyrphus serarius that you can see in Sydney (family Syrphidae, Hover Flies) are Yellow-Shouldered Stout Hover Fly (about 10%) and Native Drone Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Betasyrphus serarius is recorded against all the insects logged in Sydney (18 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.
