Plagiognathus chrysanthemi
In 3 days ~10% in a week ~20%
Plagiognathus chrysanthemi, the trefoil plant bug, is a species of plant bug in the family Miridae. It is found across the entire Palearctic and in North America as an adventive. Plagiognathus chrysanthemi sucks on herbaceous plants and it is very polyphagous feeding on many different host plants. These include species from different plant families, including daisy family (Asteraceae) and legume (Fabaceae). The bugs suck especially on the immature reproductive organs of the plants. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Helsinki | 🇫🇮 Finland | |
| 2 | Birmingham | 🇬🇧 United Kingdom | |
| 3 | London | 🇬🇧 United Kingdom |
Rare
Under 5% of wildlife watchers report a Trefoil Plant Bug sighting in London on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 1394th most-seen of the 1504 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Trefoil Plant Bug in London on a given day, so our monthly data shows no clear season.
3rd of 3
Of the 3 cities where we can rate Trefoil Plant Bug sightings, London ranks 3rd at under 5%. The best odds are in Helsinki (Finland, about 10%) and Birmingham (United Kingdom, under 5%).
GBIF citizen-science records
It is estimated from how often the Trefoil Plant Bug is recorded against all the insects logged in London (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.
