Tephritis formosa
In 3 days ~20% in a week ~30%
Tephritis formosa is a species of tephritid fly. It is one of many species known commonly as gall fly. This species is found in most countries across Europe (Albania, Andorra, Austria, Balearic Islands, Belgium, United Kingdom, Ireland, Bulgaria, Czech Republic, France, Germany, Greece, Hungary, Italy, Malta, Republic of Moldova, Poland, Portugal, Romania, Slovakia, Spain, Switzerland, The Netherlands and Ukraine) and it also occurs in the Near East (Turkey, Caucasus, Israel and Iran).
These flies inhabit a wide range of habitats, but mainly prefer meadows, grassland and urban gardens where the host plants grow. The adult male of Tephritis formosa is 4 to 5 mm long with wings about 4 mm long. The females are about 5 to 6 mm in length with wings of about 4 to 5 mm. The thorax and the abdomen are brownish. The head shows yellow-reddish eyes. The abdomen of the females ends in a tapered ovipositor, while it is rather rounded in males. The legs are yellowish. These small flies have light beige wings with large dark brown markings and small hyaline areas. The apical fork is missing. There are only some brown spots at end of veins R4+5... Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Sowthistle Tephritis sighting in Lyon on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 266th most-seen of the 411 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
April and June
In those months about 10% of wildlife watchers report a Sowthistle Tephritis in Lyon on a given day, against under 5% in May and July–March, the lowest months.
Yes
Of the 6 cities where we can rate Sowthistle Tephritis sightings, Lyon has the highest daily chance: about 10%. Next come Brussels (Belgium, under 5%) and Paris (France, under 5%).
Same order: Diptera
The closest relatives of the Sowthistle Tephritis that you can see in Lyon (order Diptera, Flies) are Marmalade Hover Fly (about 20%), Common Drone Fly (about 10%) and Asian Tiger Mosquito (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Sowthistle Tephritis is recorded against all the insects logged in Lyon (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.
