Disonycha glabrata
In 3 days ~20% in a week ~40%
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 Philadelphia on a given day, based on 65 verified sightings from GBIF citizen-science data. It is the 109th 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.
May to September
In those months about 10% of wildlife watchers report a Pigweed Flea Beetle in Philadelphia on a given day, against under 5% in October to April, 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.
2nd of 11
Of the 11 cities where we can rate Pigweed Flea Beetle sightings, Philadelphia ranks 2nd at about 10%. The best odds are in Valencia (Venezuela, about 30%).
Same family: Chrysomelidae
The closest relatives of the Pigweed Flea Beetle that you can see in Philadelphia (family Chrysomelidae, Leaf Beetles) are Spotted Cucumber Beetle (about 10%), Dogbane Leaf Beetle (about 10%) and Swamp Milkweed Leaf Beetle (about 10%), 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 Philadelphia (65 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.
