Helichus lithophilus
In 3 days ~20% in a week ~30%
Helichus lithophilus is a species of long-toed water beetle in the family Dryopidae. It is found in North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Helichus lithophilus sighting in Shenandoah National Park on a given day, based on 13 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 363rd most-seen of the 723 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
June and August
In those months about 10% of wildlife watchers report a Helichus lithophilus in Shenandoah National Park on a given day, against under 5% in July and September–May, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Helichus lithophilus sightings with a recorded time, and nearly all of them come between 6 pm and 6 am: it is mostly seen at night.
Only Shenandoah National Park, in our data
Shenandoah National Park is the only park on Wallace's Line with enough records to rate Helichus lithophilus sightings: about 10% of wildlife watchers there report one on a given day.
Same order: Coleoptera
The closest relatives of the Helichus lithophilus that you can see in Shenandoah National Park (order Coleoptera, Beetles) are Asian Lady Beetle (about 30%), Larger Elm Leaf Beetle (about 30%) and Seven-Spotted Lady Beetle (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Helichus lithophilus is recorded against all the insects logged in Shenandoah National Park (13 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.
