Chrysomela populi
In 3 days ~60% in a week ~90%
Chrysomela populi, commonly known as the poplar leaf beetle, is a species of broad-shouldered leaf beetle belonging to the family Chrysomelidae, subfamily Chrysomelinae. There are more than 25 thousand species of Chrysomelidae in the world. Many of its species carry the reputation of being agricultural and forest pests and Chrysomela populi is one of the most important and populous species of this group. C. populi is a broad-shouldered leaf beetle belonging to the family Chrysomelidae and subfamily Chrysomelinae. The species inhabits plant species of the family Salicacae and its activity favors moderate winters and dry, warm springs. Increased food quality and favorable living conditions has led to an increase in the population density of Chrysomelidae, including C. populi. C. populi have been commonly spotted in Eastern Europe and can be found throughout Asia. Specifically, they can be found living on species of Salix, like S. triandra, S. fragilis and S. viminali, and Populus, such as P. tremula, P. alba, and P. nigra.
C. populi selects hosts based on nutrient content and proportion, and it generally has high requirements for food quality. C. populi leaves behind... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Biebrza National Park | 🇵🇱 Poland | |
| 2 | Białowieża National Park | 🇵🇱 Poland | |
| 3 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 4 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 5 | Cévennes National Park | 🇫🇷 France | |
| 6 | Fertő-Hanság National Park | 🇭🇺 Hungary | |
| 7 | Wadden Sea National Park | 🇩🇪 Germany | |
| 8 | Pyrénées National Park | 🇫🇷 France |
Possible
About 20% of wildlife watchers report a Poplar Leaf Beetle sighting in Biebrza National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 27th most-seen of the 97 insects we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
July
In that month about 40% of wildlife watchers report a Poplar Leaf Beetle in Biebrza National Park on a given day, against under 5% in March–April and September, the lowest months. That is one of Biebrza National Park's wettest months, with about 95 mm of rain against 35 mm in March. December has too few records to rate.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Poplar Leaf Beetle sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 8 parks where we can rate Poplar Leaf Beetle sightings, Biebrza National Park has the highest daily chance: about 20%. Next come Białowieża National Park (Poland, about 10%) and Bavarian Forest National Park (Germany, about 10%).
GBIF citizen-science records
It is estimated from how often the Poplar Leaf Beetle is recorded against all the insects logged in Biebrza National Park (10 verified sightings from 2019 to 2026), 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.
