Plagiognathus chrysanthemi
In 3 days ~20% in a week ~30%
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 |
With luck
About 10% of wildlife watchers report a Trefoil Plant Bug sighting in Helsinki on a given day, based on 22 verified sightings from GBIF citizen-science data. It is the 292nd most-seen of the 838 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.
July and August
In those months about 10% of wildlife watchers report a Trefoil Plant Bug in Helsinki on a given day, against under 5% in September to June, the lowest months.
Yes
Of the 3 cities where we can rate Trefoil Plant Bug sightings, Helsinki has the highest daily chance: about 10%. Next come Birmingham (United Kingdom, under 5%) and London (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 Helsinki (22 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.
