Stenocorus schaumii
In 3 days ~10% in a week ~20%
Stenocorus schaumii is a species of beetle of the family Cerambycidae that is 17–29 millimetres (0.67–1.14 in) long. The colour is either black or brownish-red. Like other members of the genus, it has wide shoulders and tuberculated sides of the pronotum, with wrinkled elytron. Their larvae feed on Fraxinus, maple, and other hardwood plants. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Montreal | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a Schaum's Longhorn Beetle sighting in Montreal on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 634th most-seen of the 926 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 Schaum's Longhorn Beetle in Montreal on a given day, so our monthly data shows no clear season.
Only Montreal, in our data
Montreal is the only city on Wallace's Line with enough records to rate Schaum's Longhorn Beetle sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Cerambycidae
The closest relatives of the Schaum's Longhorn Beetle that you can see in Montreal (family Cerambycidae, Longhorn Beetles) are Red Milkweed Beetle (about 10%), Locust Borer (about 10%) and Banded Longhorn Beetle (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Schaum's Longhorn Beetle is recorded against all the insects logged in Montreal (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.
