Grammoptera subargentata
In 3 days ~10% in a week ~20%
Grammoptera subargentata is a species of beetle in the family Cerambycidae. It was described by William Kirby in 1837. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Grammoptera subargentata sighting in Portland on a given day, based on 22 verified sightings from GBIF citizen-science data. It is the 214th most-seen of the 507 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 and June
In those months about 10% of wildlife watchers report a Grammoptera subargentata in Portland on a given day, against under 5% in July to April, the lowest months. Those are among Portland's driest months, with about 65 mm of rain a month against 250 mm in December.
3rd of 6
Of the 6 cities where we can rate Grammoptera subargentata sightings, Portland ranks 3rd at under 5%. The best odds are in Anchorage (United States, about 10%) and Calgary (Canada, under 5%).
Same family: Cerambycidae
The closest relatives of the Grammoptera subargentata that you can see in Portland (family Cerambycidae, Longhorn Beetles) are Banded Alder Borer (about 10%), Xestoleptura crassipes (about 10%) and Locust Borer (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Grammoptera subargentata is recorded against all the insects logged in Portland (22 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.
