Disonycha glabrata
In 3 days ~20% in a week ~30%
Disonycha glabrata, the pigweed flea beetle, is a species of striped flea beetle in the family Chrysomelidae. It feeds on Amaranthus retroflexus and lays eggs in it. The first stadium (duration of the first instar) for the larvae of this species is 3.6 days. The second stadium lasts 2.6 days, followed by 2.9 days of the third stadium, during which time the species also spends 13.5 days in the soil. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Biotopo Cerro Cahuí | 🇬🇹 Guatemala | |
| 2 | Shenandoah National Park | 🇺🇸 United States | |
| 3 | Saguaro National Park | 🇺🇸 United States | |
| 4 | Cumbres de Monterrey National Park | 🇲🇽 Mexico |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Valencia | 🇻🇪 Venezuela | |
| 2 | Philadelphia | 🇺🇸 United States | |
| 3 | Baltimore | 🇺🇸 United States | |
| 4 | Panama City | 🇵🇦 Panama | |
| 5 | Mesa | 🇺🇸 United States | |
| 6 | Austin | 🇺🇸 United States | |
| 7 | Washington | 🇺🇸 United States | |
| 8 | Guadalajara | 🇲🇽 México | |
| 9 | New York City | 🇺🇸 United States | |
| 10 | Dallas | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Pigweed Flea Beetle sighting in Shenandoah National Park on a given day, based on 11 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 Pigweed Flea Beetle in Shenandoah National Park on a given day, against under 5% in July and September–May, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Pigweed Flea Beetle sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 4 parks where we can rate Pigweed Flea Beetle sightings, Shenandoah National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Biotopo Cerro Cahuí (Guatemala, about 10%).
Same family: Chrysomelidae
The closest relatives of the Pigweed Flea Beetle that you can see in Shenandoah National Park (family Chrysomelidae, Leaf Beetles) are Larger Elm Leaf Beetle (about 30%), Dogbane Leaf Beetle (about 20%) and Spotted Cucumber Beetle (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Pigweed Flea Beetle is recorded against all the insects logged in Shenandoah National Park (11 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.
