Platycerus oregonensis
In 3 days ~10% in a week ~20%
Platycerus oregonensis, or the Oregon stag beetle, is a small species of stag beetle from the subfamily Lucaninae. It was discovered by John O. Westwood in 1844. The Oregon stag beetle was discovered and described in 1844 in the U.S. state of Oregon by entomologist John O. Westwood. In 1946, two other Platycerus species; P. coerulescens and P. chalybaeus, were found to be synonymous with this species (i.e., the same species). There are 16 specimens known across 6 museums and laboratories.
The larvae of the Oregon stag beetle are similar to other scarabaeoid beetles, with nine light gray body segments and two anal plates. These anal plates each have a black spot in the middle. The sides of the body are slightly compressed. The round head is wider than it is long, and are capped with three-segmented antennae. The segments of the antennae decrease in size, with the first being the largest. In this stage, the mouthparts, called mandibles, are short and wide, possessing two teeth. The mandibles have black markings on the sides and tips.
Males of this species measure between 11.2 and 15.4 mm (0.44 and 0.61 in) in length, while females... 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 an Oregon Stag Beetle sighting in Seattle on a given day, based on 18 verified sightings from GBIF citizen-science data. It is the 191st most-seen of the 428 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.
April and May
In those months about 10% of wildlife watchers report an Oregon Stag Beetle in Seattle on a given day, against under 5% in June to March, the lowest months.
Yes
Of the 2 cities where we can rate Oregon Stag Beetle sightings, Seattle has the highest daily chance: under 5%. Next come Vancouver (Canada, under 5%).
GBIF citizen-science records
It is estimated from how often the Oregon Stag Beetle is recorded against all the insects logged in Seattle (18 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.
