Cystiphora sonchi
In 3 days ~20% in a week ~40%
Cystiphora sonchi is a species of gall midge in the family Cecidomyiidae. It is native to Eurasia, but has been introduced to North America as a biocontrol of sow thistles. The larvae cause small, circular galls on the leaves of the host plants. Several species of parasitic wasps use the larvae as hosts.
This species was first described as Cecidomyia sonchi by Swiss entomologist Johann Jacob Bremi-Wolf in 1847. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Elk Island National Park | 🇨🇦 Canada | |
| 2 | Wadden Sea National Park | 🇩🇪 Germany |
With luck
About 10% of wildlife watchers report a Cystiphora sonchi sighting in Athens on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 137th most-seen of the 242 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
October and December
In those months about 20% of wildlife watchers report a Cystiphora sonchi in Athens on a given day, against under 5% in January–April, June–August and November, the lowest months. Those are among Athens's wettest months, with about 70 mm of rain a month against 10 mm in August.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Cystiphora sonchi sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 6 cities where we can rate Cystiphora sonchi sightings, Athens has the highest daily chance: about 10%. Next come Edmonton (Canada, about 10%) and Calgary (Canada, about 10%).
Same order: Diptera
The closest relatives of the Cystiphora sonchi that you can see in Athens (order Diptera, Flies) are Bathroom Moth Fly (about 10%), Common Drone Fly (about 10%) and Stripe-Eyed Lagoon Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Cystiphora sonchi is recorded against all the insects logged in Athens (7 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.
