Synaphaeta guexi
In 3 days ~20% in a week ~40%
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 |
With luck
About 10% of wildlife watchers report a Spotted Tree Borer sighting in Sequoia and Kings Canyon National Parks on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 114th most-seen of the 161 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
May
In that month about 20% of wildlife watchers report a Spotted Tree Borer in Sequoia and Kings Canyon National Parks on a given day, against under 5% in July to April, the lowest months.
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.
Only Sequoia and Kings Canyon National Parks, in our data
Sequoia and Kings Canyon National Parks is the only park on Wallace's Line with enough records to rate Spotted Tree Borer sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Cerambycidae
The closest relatives of the Spotted Tree Borer that you can see in Sequoia and Kings Canyon National Parks (family Cerambycidae, Longhorn Beetles) are White-Spotted Sawyer (about 40%), California Root Borer (about 10%) and Judolia instabilis (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Spotted Tree Borer is recorded against all the insects logged in Sequoia and Kings Canyon National Parks (6 verified sightings from 2019 to 2026), 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.
