Ceriana vespiformis
In 3 days ~10% in a week ~20%
Ceriana vespiformis is a species of hoverfly. It is a typical wasp mimic, is 10–11 mm long, and has very long antennae for a hoverfly. 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 Ceriana vespiformis sighting in Madrid on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 328th most-seen of the 457 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.
July and September
In those months about 10% of wildlife watchers report a Ceriana vespiformis in Madrid on a given day, against under 5% in August and October–June, the lowest months. Those are among Madrid's driest months, with about 15 mm of rain a month against 65 mm in October.
2nd of 3
Of the 3 cities where we can rate Ceriana vespiformis sightings, Madrid ranks 2nd at under 5%. The best odds are in Barcelona (Spain, about 10%).
Same family: Syrphidae
The closest relatives of the Ceriana vespiformis that you can see in Madrid (family Syrphidae, Hover Flies) are Marmalade Hover Fly (about 10%), Tapered Drone Fly (about 10%) and Migrant Hover Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Ceriana vespiformis is recorded against all the insects logged in Madrid (10 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.
