Uroleucon sonchi
In 3 days ~10% in a week ~20%
Uroleucon sonchi is a species of aphid in the family Aphididae. Known as the large sow-thistle aphid, it is a native of Europe, and has been introduced to several other countries. It principally feeds on the sow thistle (Sonchus sp.) but is also a pest of cultivated lettuce, and so is also known as the brown lettuce aphid. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Sow-Thistle Aphid sighting in Madrid on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 409th 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.
April
In that month about 10% of wildlife watchers report a Sow-Thistle Aphid in Madrid on a given day, against under 5% in May to March, the lowest months.
Yes
Of the 3 cities where we can rate Sow-Thistle Aphid sightings, Madrid has the highest daily chance: under 5%. Next come Sydney (Australia, under 5%) and Melbourne (Australia, under 5%).
Same family: Aphididae
The closest relatives of the Sow-Thistle Aphid that you can see in Madrid (family Aphididae, Aphids) are Oleander Aphid (about 10%), Rice Root Aphid (about 10%) and Poplar Shoot Aphid (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Sow-Thistle Aphid is recorded against all the insects logged in Madrid (5 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.
