Saperda tridentata
In 3 days ~10%
The elm borer (Saperda tridentata) is a species of beetle in the family Cerambycidae. It was described by Guillaume-Antoine Olivier in 1795. It is known from Canada and the United States. It feeds on Ulmus rubra and Ulmus americana. It acts as a vector for the fungus Ophiostoma ulmi, and as a host for the parasitoid wasp Cenocoelius saperdae. 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 an Elm Borer sighting in Toronto on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 1212th most-seen of the 1689 insects we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report an Elm Borer in Toronto on a given day, so our monthly data shows no clear season.
Among the best
Of the 6 cities where we can rate Elm Borer sightings, Toronto ranks 6th at under 5%, level with the leaders once rounded. The best odds are in Dallas (United States, under 5%), Baltimore (United States, under 5%) and Montreal (Canada, under 5%).
Same family: Cerambycidae
The closest relatives of the Elm Borer that you can see in Toronto (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 Elm Borer is recorded against all the insects logged in Toronto (8 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.
