Synaphaeta guexi
In 3 days ~10%
Synaphaeta is a monotypic beetle genus in the family Cerambycidae first described by Thomson in 1864. Its only species, Synaphaeta guexi (Also called the spotted tree borer), occurs in the Pacific states of North America, from British Columbia down to California. It has been reared from a variety of hardwood trees, including Pacific willow (Salix lasiandra), white alder (Alnus rhombifolia), coffeeberry (Frangula californica), English walnut (Juglans regia), and cherry (Prunus sp.). It was described by John Lawrence LeConte in 1852 based on a specimen from Benicia, California. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sequoia and Kings Canyon National Parks | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Portland | 🇺🇸 United States | |
| 2 | San Francisco | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Spotted Tree Borer sighting in San Francisco on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 480th most-seen of the 737 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 a Spotted Tree Borer in San Francisco on a given day, so our monthly data shows no clear season.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Spotted Tree Borer sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 2 cities where we can rate Spotted Tree Borer sightings, San Francisco ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Portland (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Spotted Tree Borer is recorded against all the insects logged in San Francisco (10 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.
