Trichoferus campestris
In 3 days ~10% in a week ~20%
Trichoferus campestris, the velvet longhorned beetle, is a species of long-horned beetle in the family Cerambycidae. Trichoferus campestris is native to eastern Asia including China, North Korea, South Korea, Japan, Mongolia and eastern Russia. Individuals or population records also exist in Armenia, Azerbaijan, Kazakhstan, Kyrgyzstan, Uzbekistan, Western Russia, Tajikistan and Turkmenistan. These populations are most likely the result of ancient introductions from Asiatic Russia but natural expansion could also be responsible.
In North America, individuals were first detected in 1997 in New Jersey, USA and has since become well established in USA and Canada. The species has also been introduced into European countries including; Germany, Austria, Belgium, Belarus, France, Georgia, Greece, Hungary, Italy, Latvia, Lithuania, Moldova, Poland, Romania, UK, Slovakia, Sweden, Switzerland, Czechia and Ukraine. Wikipedia →
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Velvet Longhorned Beetle sighting in Denver on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 292nd most-seen of the 461 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 Velvet Longhorned Beetle in Denver on a given day, so our monthly data shows no clear season.
7th of 10
Of the 10 cities where we can rate Velvet Longhorned Beetle sightings, Denver ranks 7th at under 5%. The best odds are in Kharkiv (Ukraine, about 10%), Kyiv (Ukraine, about 10%) and Budapest (Hungary, about 10%).
Same family: Cerambycidae
The closest relatives of the Velvet Longhorned Beetle that you can see in Denver (family Cerambycidae, Longhorn Beetles) are Red-Femured Milkweed Borer (about 20%), Sutured Longhorn Beetle (about 10%) and Locust Borer (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Velvet Longhorned Beetle is recorded against all the insects logged in Denver (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.
