Agrilus cuprescens
In 3 days ~20% in a week ~40%
Agrilus cuprescens, known generally as the rose stem girdler or bronze cane borer, is a species of metallic wood-boring beetle in the family Buprestidae. It is found in Europe and Northern Asia (excluding China) and North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Rose Stem Girdler sighting in London on a given day, based on 84 verified sightings from GBIF citizen-science data. It is the 348th most-seen of the 1504 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
May to July
In those months about 10% of wildlife watchers report a Rose Stem Girdler in London on a given day, against under 5% in August to April, the lowest months.
Yes
Of the 6 cities where we can rate Rose Stem Girdler sightings, London has the highest daily chance: about 10%. Next come Portland (United States, under 5%) and Montreal (Canada, under 5%).
GBIF citizen-science records
It is estimated from how often the Rose Stem Girdler is recorded against all the insects logged in London (84 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.
