Andrena clarkella
In 3 days ~10% in a week ~20%
The Clark's miner bee (Andrena clarkella) is a species of miner bee in the family Andrenidae. Other common names include Clark's andrena and Clarke's mining bee. It is found in Europe and Northern Asia (excluding China) and North America.
Etymology: William Kirby named the species in honor of Bracy Clark, an English entomologist. Identification: 10-13 mm. Male with brown hair with loose tergite bands. Rarely on flowers, more on tree bark basking. Female easy to determine in the field: very densely hairy, with black hairs on the abdomen and reddish brown hair on the mesonotum. Hind legs fox red with equally colored rail brush. Small specimens resemble Andrena bicolor. Terminal fringe dark brown.
Pollen sources: Oligolectic on willows (Salix, Salicaceae). Nest building: Bare to sparsely overgrown areas in sparse forests Forest fringes or clearings, preferably in sandy soil, but also nests in humus soils, mostly in smaller aggregations with low nest density. The nest entrance is locked before each food supply flight. One to four brood cells are created per nest, often only 5 cm, a maximum of 30 cm below the surface.
Habitat: Affinity to forests; forest fringes, forest clearings, clear cuts, preferred on sandy soil. From the lowlands to the subalpine altitude. Parasites: cuckoo bee is Nomada leucophthalma. As another nest parasite Bombylius major was observed. Adults are sometimes infested with Stylops melittae.
Flight period: In one generation from early March to mid-May. 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 | Helsinki | 🇫🇮 Finland | |
| 2 | Manchester | 🇬🇧 United Kingdom | |
| 3 | Novosibirsk | 🇷🇺 Russia | |
| 4 | Birmingham | 🇬🇧 United Kingdom | |
| 5 | Liverpool | 🇬🇧 United Kingdom | |
| 6 | Nizhny Novgorod | 🇷🇺 Russia | |
| 7 | Yekaterinburg | 🇷🇺 Russia | |
| 8 | Moscow | 🇷🇺 Russia | |
| 9 | Saint Petersburg | 🇷🇺 Russia | |
| 10 | London | 🇬🇧 United Kingdom |
Rare
Under 5% of wildlife watchers report a Clark's Mining Bee sighting in Saint Petersburg on a given day, based on 13 verified sightings from GBIF citizen-science data. It is the 248th most-seen of the 448 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.
April
In that month about 10% of wildlife watchers report a Clark's Mining Bee in Saint Petersburg on a given day, against under 5% in May to March, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Clark's Mining Bee sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
9th of 10
Of the 10 cities where we can rate Clark's Mining Bee sightings, Saint Petersburg ranks 9th at under 5%. The best odds are in Helsinki (Finland, about 10%), Manchester (United Kingdom, about 10%) and Novosibirsk (Russia, about 10%).
GBIF citizen-science records
It is estimated from how often the Clark's Mining Bee is recorded against all the insects logged in Saint Petersburg (13 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.
