Plectrura spinicauda
In 3 days ~10% in a week ~30%
Plectrura spinicauda is a species of beetle in the family Cerambycidae. It was described by Victor Motschulsky in 1845. It is known from the United States and Canada. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Bear Rainforest | 🇨🇦 Canada | |
| 2 | Olympic National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Thorn-Tailed Longhorn Beetle sighting in Olympic National Park on a given day, based on 11 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 105th most-seen of the 207 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
January, April–May and November
In those months about 10% of wildlife watchers report a Thorn-Tailed Longhorn Beetle in Olympic National Park on a given day, against under 5% in February–March, June–October and December, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Thorn-Tailed Longhorn Beetle sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 2 parks where we can rate Thorn-Tailed Longhorn Beetle sightings, Olympic National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Great Bear Rainforest (Canada, about 10%).
Same family: Cerambycidae
The closest relatives of the Thorn-Tailed Longhorn Beetle that you can see in Olympic National Park (family Cerambycidae, Longhorn Beetles) are White-Spotted Sawyer (about 10%), Pachyta armata (about 10%) and Banded Alder Borer (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Thorn-Tailed Longhorn Beetle is recorded against all the insects logged in Olympic National Park (11 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.
