Silhouette: Gareth Monger · PhyloPic
Helophilus eristaloideus
In 3 days ~20% in a week ~50%
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Helophilus eristaloideus sighting in Tokyo on a given day, based on 224 verified sightings from GBIF citizen-science data. It is the 78th most-seen of the 1013 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
March and April
In those months about 20% of wildlife watchers report a Helophilus eristaloideus in Tokyo on a given day, against under 5% in July–September and December–February, the lowest months.
Among the best
Of the 5 cities where we can rate Helophilus eristaloideus sightings, Tokyo ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Nagoya (Japan, about 10%) and Seoul (South Korea, about 10%).
Same family: Syrphidae
The closest relatives of the Helophilus eristaloideus that you can see in Tokyo (family Syrphidae, Hover Flies) are Marmalade Hover Fly (about 10%), Phytomia zonata (about 10%) and Common Drone Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Helophilus eristaloideus is recorded against all the insects logged in Tokyo (224 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.
