Sehirus cinctus
In 3 days ~10% in a week ~30%
Sehirus cinctus, also known as the white-margined burrower bug, is within the genus of burrowing bugs belonging to the family Cydnidae, subfamily Sehirinae. Belonging to the suborder Heteroptera, they are true bugs. They feed on plants in the Urticaceae (nettle) and Lamiaceae (mint) families. These bugs are somewhat unusual in that they exhibit brooding behavior. The female deposits eggs, about 120–150, in shallow burrows and watches over them. After the young hatch, the mother will bring food to them in the burrow for 1–3 days, after which the young will leave and forage on their own. Females can have up to two broods, and parental care is initiated from chemical cues in the eggs. 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 | Dallas | 🇺🇸 United States | |
| 2 | Baltimore | 🇺🇸 United States | |
| 3 | Austin | 🇺🇸 United States | |
| 4 | Washington | 🇺🇸 United States | |
| 5 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 6 | Edmonton | 🇨🇦 Canada | |
| 7 | San Antonio | 🇺🇸 United States | |
| 8 | Philadelphia | 🇺🇸 United States | |
| 9 | Montreal | 🇨🇦 Canada | |
| 10 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a White-Margined Burrowing Bug sighting in Shenandoah National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 630th most-seen of the 723 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
March and May
In those months about 10% of wildlife watchers report a White-Margined Burrowing Bug in Shenandoah National Park on a given day, against under 5% in April and June–February, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most White-Margined Burrowing Bug sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 2
Of the 2 parks where we can rate White-Margined Burrowing Bug sightings, Shenandoah National Park ranks 2nd at under 5%. The best odds are in Great Smoky Mountains National Park (United States, about 10%).
Same order: Hemiptera
The closest relatives of the White-Margined Burrowing Bug that you can see in Shenandoah National Park (order Hemiptera, True Bugs, Hoppers, Aphids, and allies) are Spotted Lanternfly (about 50%), Large Milkweed Bug (about 20%) and Acanthocephala terminalis (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the White-Margined Burrowing Bug is recorded against all the insects logged in Shenandoah National Park (5 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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