Bembix rostrata
In 3 days ~10% in a week ~30%
Bembix rostrata is a species of sand wasp native to Central Europe. The genus Bembix - of which B. rostrata is among the most distinctive species - has over 340 species worldwide and is found mostly in warm regions with open, sandy soils; Australia and Africa have a particularly rich variety of species.
Bembix rostrata ranges in distribution from Europe and the Mediterranean to Central Asia, and as far north as Denmark and Sweden. Bembix rostrata displays distinctive behaviour in front of its nest, digging its burrows with fast, synchronised movements of its forelegs. In addition, the insect can turn very rapidly about its own axis, the flapping of its wings as it does this producing a buzzing sound reminiscent of a gyroscope. Its size (15–24 mm or 0.59–0.94 in), striking yellow and black-striped abdomen and the labrum, extended into a narrow beak, are distinctive features.
Bembix rostrata goes through 4 general life stages: egg, larva, pupa, and adult. Adult females burrow nests into the sand and lay their eggs there. Once the eggs hatch, the new larvae continue their development in the nests that they were born in. Each... Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Bembix rostrata sighting in Warsaw on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 373rd most-seen of the 580 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
June and July
In those months about 10% of wildlife watchers report a Bembix rostrata in Warsaw on a given day, against under 5% in August to May, the lowest months.
Yes
Of the 2 cities where we can rate Bembix rostrata sightings, Warsaw has the highest daily chance: under 5%. Next come Berlin (Germany, under 5%).
Same family: Crabronidae
The closest relatives of the Bembix rostrata that you can see in Warsaw (family Crabronidae, Square-headed Wasps, Sand Wasps, and Allies) are European Beewolf (about 20%), Ornate-Tailed Digger Wasp (about 10%) and Bembecinus tridens (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Bembix rostrata is recorded against all the insects logged in Warsaw (8 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.
