Pompilus cinereus
In 3 days ~10% in a week ~20%
Pompilus cinereus, the leaden spider wasp, is the most widespread species of spider wasp in the genus Pompilus and is the only species of its genus throughout a large proportion of its wide distribution. It is the type species of the genus Pompilus and therefore also of the family Pompilidae.
It is widespread throughout the Old World, including Mediterranean islands, Canary Islands, Madagascar, Sri Lanka, Japan, the Philippines, Borneo, Java, and Australia. In Britain, it is mainly found in the south, but extends north to the central belt of Scotland.
P. cinereus is a highly variable species throughout its wide range, giving rise to the large number of synonyms which have been attached to the species by different authors. Where it overlaps with congeners in southern and central Africa and in southern Asia, the phenotype is stable and it can be distinguished from the species with which it is sympatric. Over the rest of its huge range, it has no sympatric congeners and shows wide phenotypic variation.
For example, in western Europe, the females in north-western populations are predominantly black, pubescent dorsally with narrow transverse strips... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Warsaw | 🇵🇱 Poland |
Rare
Under 5% of wildlife watchers report a Pompilus cinereus sighting in Warsaw on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 501st 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 20%, if each day is a fresh chance.
June and August
In those months about 10% of wildlife watchers report a Pompilus cinereus in Warsaw on a given day, against under 5% in July and September–May, the lowest months.
Only Warsaw, in our data
Warsaw is the only city on Wallace's Line with enough records to rate Pompilus cinereus sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Pompilus cinereus is recorded against all the insects logged in Warsaw (7 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.
