Alaus oculatus
In 3 days ~20% in a week ~40%
Alaus oculatus, commonly called the eastern eyed click beetle or eyed elater, is a species of click beetle. Alaus oculatus can reach a length of about 25–45 millimetres (1.0–1.8 in). They have an elongated body, black in color throughout. The pronotum exhibits a large oval patch of darker scales, framed in white, on each side - the common name of the beetle derives from this feature. The elytra are striated and mottled with silvery whitish scales. The depiction of a large pair of eyes on the pronotum is a defensive adaptation that has evolved because of its advantage in confusing or frightening potential predators. These “eyespots” are a form of self-mimicry, in which one part of the body has adapted to mimic another body part. Like all click beetles, A. oculatus is also capable of suddenly catapulting itself out of danger by releasing the energy stored by a click mechanism, which consists of a stout spine on the prosternum and a matching groove in the mesosternum.
Eggs are laid in soil or on standing deadwood. Many larvae from the click beetle family Elateridae are commonly referred to as wireworms and are prominent agricultural pests that feast on... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Congaree National Park | 🇺🇸 United States | |
| 2 | Shenandoah National Park | 🇺🇸 United States | |
| 3 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 4 | Point Pelee National Park | 🇨🇦 Canada | |
| 5 | Merritt Island National Wildlife Refuge | 🇺🇸 United States | |
| 6 | Everglades National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Baltimore | 🇺🇸 United States | |
| 2 | Washington | 🇺🇸 United States | |
| 3 | Philadelphia | 🇺🇸 United States | |
| 4 | Orlando | 🇺🇸 United States | |
| 5 | Toronto | 🇨🇦 Canada | |
| 6 | New York City | 🇺🇸 United States | |
| 7 | Montreal | 🇨🇦 Canada | |
| 8 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 9 | Boston | 🇺🇸 United States | |
| 10 | Chicago | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report an Eastern Eyed Click Beetle sighting in Philadelphia on a given day, based on 73 verified sightings from GBIF citizen-science data. It is the 91st most-seen of the 632 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
June
In that month about 20% of wildlife watchers report an Eastern Eyed Click Beetle in Philadelphia on a given day, against under 5% in August to March, the lowest months.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Eastern Eyed Click 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.
Among the best
Of the 13 cities where we can rate Eastern Eyed Click Beetle sightings, Philadelphia ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Baltimore (United States, about 10%) and Washington (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Eastern Eyed Click Beetle is recorded against all the insects logged in Philadelphia (73 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.
