Ctesias serra
In 3 days ~10% in a week ~20%
Ctesias serra, commonly known as the cobweb beetle, is a species of beetle native to England in the family Dermestidae. The common name relates to the larva's habit of taking trapped insects from spiderwebs. The preferred habitat is beneath old thick bark. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Cobweb Beetle sighting in London on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 1109th most-seen of the 1504 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Cobweb Beetle in London on a given day, so our monthly data shows no clear season.
Among the best
Of the 2 cities where we can rate Cobweb Beetle sightings, London ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Paris (France, under 5%).
GBIF citizen-science records
It is estimated from how often the Cobweb Beetle is recorded against all the insects logged in London (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.
