Psephenus herricki
In 3 days ~10% in a week ~20%
Psephenus herricki is a species of water penny beetle in the family Psephenidae. It is found in eastern North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States | |
| 2 | Great Smoky Mountains National Park | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Herrick's Water Penny Beetle sighting in Baltimore on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 486th most-seen of the 705 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.
March, September and November
In those months about 10% of wildlife watchers report a Herrick's Water Penny Beetle in Baltimore on a given day, against under 5% in April–August, October and December–February, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Herrick's Water Penny Beetle 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 2 cities where we can rate Herrick's Water Penny Beetle sightings, Baltimore has the highest daily chance: under 5%. Next come Toronto (Canada, under 5%).
Same order: Coleoptera
The closest relatives of the Herrick's Water Penny Beetle that you can see in Baltimore (order Coleoptera, Beetles) are Asian Lady Beetle (about 30%), Common Green June Beetle (about 10%) and Horned Passalus Beetle (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Herrick's Water Penny Beetle is recorded against all the insects logged in Baltimore (7 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.
