Crepidodera aurata
In 3 days ~20% in a week ~30%
Crepidodera aurata also known as willow flea beetle, is a species of flea beetles from the Chrysomelidae family, described by Marsham in 1802. It can be found in Palearctic realm and to the east of Korea. Can be found in Wales.
Adult species length is 2.5–2.5 millimetres (0.098–0.098 in), and is oval. Males of the species are black coloured, while females are green. Both have orange legs and antennas. The beetle be found in every place where the willow grows. They hibernate under barks or debris, and can be found under logs and mud. The species live for 8–9 months. They are active during spring, particularly in May, and can be found on the ground where the tree have started throwing its buds. From May to June the species can be visibly seen on poplars and willows, whose leaves they feed on, by the round holes left as a result. Starting from June to August the beetles start mating. The females lay their eggs on the recently fed-on leaves of plants. The eggs' colour is yellow, and are spindle-like. The larva hatches in summer, with the size of 5–6 millimetres (0.20–0.24 in) in length, black coloured, and in resemblance of a slug. The larva feeds... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 2 | Helsinki | 🇫🇮 Finland | |
| 3 | Saint Petersburg | 🇷🇺 Russia | |
| 4 | Birmingham | 🇬🇧 United Kingdom | |
| 5 | Brussels | 🇧🇪 Belgium | |
| 6 | Munich | 🇩🇪 Germany | |
| 7 | Berlin | 🇩🇪 Germany | |
| 8 | London | 🇬🇧 United Kingdom | |
| 9 | Moscow | 🇷🇺 Russia |
With luck
About 10% of wildlife watchers report a Willow Flea-Beetle sighting in Bavarian Forest National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 585th most-seen of the 1115 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.
April–May and September
In those months about 10% of wildlife watchers report a Willow Flea-Beetle in Bavarian Forest National Park on a given day, against under 5% in June–August and October–March, the lowest months.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Willow Flea-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.
Only Bavarian Forest National Park, in our data
Bavarian Forest National Park is the only park on Wallace's Line with enough records to rate Willow Flea-Beetle sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Chrysomelidae
The closest relatives of the Willow Flea-Beetle that you can see in Bavarian Forest National Park (family Chrysomelidae, Leaf Beetles) are Poplar Leaf Beetle (about 10%), Colorado Potato Beetle (about 10%) and Willow Clytra (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Willow Flea-Beetle is recorded against all the insects logged in Bavarian Forest National Park (9 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.
