Crepidodera aurata
In 3 days ~10% in a week ~20%
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 |
Rare
Under 5% of wildlife watchers report a Willow Flea-Beetle sighting in Berlin on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 694th most-seen of the 1065 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.
May and November–December
In those months about 10% of wildlife watchers report a Willow Flea-Beetle in Berlin on a given day, against under 5% in January–April and June–October, 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.
7th of 9
Of the 9 cities where we can rate Willow Flea-Beetle sightings, Berlin ranks 7th at under 5%. The best odds are in Rotterdam [The Hague] (Netherlands, about 10%), Helsinki (Finland, under 5%) and Saint Petersburg (Russia, under 5%).
Same family: Chrysomelidae
The closest relatives of the Willow Flea-Beetle that you can see in Berlin (family Chrysomelidae, Leaf Beetles) are Willow Clytra (about 10%), Poplar Leaf Beetle (about 10%) and Colorado Potato Beetle (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 Berlin (9 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.
