Monochamus obtusus
In 3 days ~30% in a week ~60%
Monochamus obtusus is a species of beetle in the family Cerambycidae. It was described by Thomas Lincoln Casey Jr. in 1891. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Yosemite National Park | 🇺🇸 United States | |
| 2 | Sequoia and Kings Canyon National Parks | 🇺🇸 United States | |
| 3 | Redwood National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Portland | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Monochamus obtusus sighting in Yosemite National Park on a given day, based on 35 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 43rd most-seen of the 227 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
July
In that month about 20% of wildlife watchers report a Monochamus obtusus in Yosemite National Park on a given day, against under 5% in November to May, the lowest months. That is one of Yosemite National Park's driest months, with about 25 mm of rain against 220 mm in January.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Monochamus obtusus sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 3 parks where we can rate Monochamus obtusus sightings, Yosemite National Park has the highest daily chance: about 10%. Next come Sequoia and Kings Canyon National Parks (United States, about 10%) and Redwood National Park (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Monochamus obtusus is recorded against all the insects logged in Yosemite National Park (35 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.
