Oberea tripunctata
In 3 days ~10% in a week ~20%
Oberea tripunctata, the dogwood twig borer, is a species of longhorn beetle that is a widespread pest that attacks dogwood trees. Dogwood twig borer adults have slender, elongated bodies like many other beetles of the genus Oberea. They are between 10 and 15 millimeters long and 3 millimeters wide. The head is dark to black and there are three prominent black spots arranged in a triangle on the beetles' thorax. The wing covers are a yellowish tan. There is a narrow black line on the inner edge and a broader, darker line on the outer wing on the lateral margin. There are also two distinct dots right behind the beetle's head.
The larvae of dogwood twig borers, in their final phase, are yellowish, legless and about 19 millimeters long. The dogwood twig borer is distributed in the United States of America wherever there are flowering dogwood trees. They are adaptable and although the bulk of a dogwood twig borer's diet is obtained from flowering dogwood trees, it can also feed on elm, azalea, and viburnum. Many species of fruit trees are attacked by the beetle. The beetle usually begins its infestation by attacking individual twigs, so wilting leaves on twigs... Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Toronto | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a Dogwood Twig Borer sighting in Toronto on a given day, based on 15 verified sightings from GBIF citizen-science data. It is the 828th most-seen of the 1689 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 Dogwood Twig Borer in Toronto on a given day, so our monthly data shows no clear season.
Only Toronto, in our data
Toronto is the only city on Wallace's Line with enough records to rate Dogwood Twig Borer sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Cerambycidae
The closest relatives of the Dogwood Twig 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 Dogwood Twig Borer is recorded against all the insects logged in Toronto (15 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.
