Colasposoma dauricum
In 3 days ~10% in a week ~30%
Colasposoma dauricum is a species of leaf beetle from eastern Asia. It was first described by Carl Gustaf Mannerheim in 1849. It is known as a pest of sweet potatoes. C. dauricum and the similar species Colasposoma viridicoeruleum (formerly known as Colasposoma auripenne) are sometimes considered to be a single species, with C. dauricum dauricum as the northern subspecies, and C. dauricum auripenne as the southern subspecies.
C. dauricum is known from Russia (Siberia and Far East), Kazakhstan, Mongolia, China (North and Northeast), Taiwan, North Korea, South Korea and Japan. Since 2010, C. dauricum has also been recorded from Piedmont, Italy, where it is an invasive species. 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 Colasposoma dauricum sighting in Tokyo on a given day, based on 47 verified sightings from GBIF citizen-science data. It is the 257th most-seen of the 1013 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.
May and June
In those months about 10% of wildlife watchers report a Colasposoma dauricum in Tokyo on a given day, against under 5% in July to April, the lowest months.
3rd of 4
Of the 4 cities where we can rate Colasposoma dauricum sightings, Tokyo ranks 3rd at under 5%. The best odds are in Turin (Italy, about 10%) and Beijing (China, under 5%).
Same family: Chrysomelidae
The closest relatives of the Colasposoma dauricum that you can see in Tokyo (family Chrysomelidae, Leaf Beetles) are Aulacophora nigripennis (about 20%), Lema diversipes (about 20%) and Nepalese Turtle Beetle (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Colasposoma dauricum is recorded against all the insects logged in Tokyo (47 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.
