Rhiginia cruciata
In 3 days ~20% in a week ~40%
Rhiginia cruciata, commonly known as the scarlet-bordered assassin bug or cruciate assassin bug, is a species of millipede assassin in the family Reduviidae. It is found in the Caribbean, Central America, and North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 2 | Shenandoah National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Philadelphia | 🇺🇸 United States | |
| 2 | Washington | 🇺🇸 United States | |
| 3 | New York City | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Scarlet-Bordered Assassin Bug sighting in Shenandoah National Park on a given day, based on 16 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 234th 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 40%, if each day is a fresh chance.
May
In that month about 20% of wildlife watchers report a Scarlet-Bordered Assassin Bug in Shenandoah National Park on a given day, against under 5% in August to March, the lowest months.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Scarlet-Bordered Assassin Bug 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 2 parks where we can rate Scarlet-Bordered Assassin Bug sightings, Shenandoah National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Great Smoky Mountains National Park (United States, about 10%).
Same family: Reduviidae
The closest relatives of the Scarlet-Bordered Assassin Bug that you can see in Shenandoah National Park (family Reduviidae, Assassin Bugs) are Pale Green Assassin Bug (about 10%), North American Wheel Bug (about 10%) and Ringed Assassin Bug (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Scarlet-Bordered Assassin Bug is recorded against all the insects logged in Shenandoah National Park (16 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.
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