Saperda tridentata
In 3 days ~10% in a week ~20%
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 |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report an Elm Borer sighting in Dallas on a given day, based on 21 verified sightings from GBIF citizen-science data. It is the 647th most-seen of the 1412 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.
May
In that month about 10% of wildlife watchers report an Elm Borer in Dallas on a given day, against under 5% in June to April, the lowest months. That is one of Dallas's wettest months, with about 120 mm of rain against 55 mm in July.
Yes
Of the 6 cities where we can rate Elm Borer sightings, Dallas has the highest daily chance: under 5%. Next come Baltimore (United States, under 5%) and Montreal (Canada, under 5%).
GBIF citizen-science records
It is estimated from how often the Elm Borer is recorded against all the insects logged in Dallas (21 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.
