Acanalonia conica
In 3 days ~20% in a week ~40%
Acanalonia conica is a species of planthopper in the family Acanaloniidae. It is found in North America and Europe. More accurately, it is native to North America, and was first found in Europe in Italy in 2003, most likely through human activity. It has since spread throughout Europe.
The species is native to the Nearctic realm, but has been found in Northern Italy for the first time in 2003. It was then found in Slovenia, Switzerland, France, Hungary, Austria, Romania, Bulgaria and Russia. A. conica is known to be a very polyphagous species, capable of developing on diverse host plants, including cultivated species. Since its introduction in Italy, the species has been observed to form populations much denser than the ones in its native range. It was estimated that due to its similarities to another introduced planthopper, Metcalfa pruinosa, it is at risk of spreading further and becoming a pest.
In its native range, A. conica is very often living in association with three flatid planthopper species. The species has only one generation per year (univoltine). Eggs are laid in the summer and in the Autumn, individually encased in concavities... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States | |
| 2 | Great Smoky Mountains National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Milan | 🇮🇹 Italy | |
| 2 | Turin | 🇮🇹 Italy | |
| 3 | Washington | 🇺🇸 United States | |
| 4 | Boston | 🇺🇸 United States | |
| 5 | Baltimore | 🇺🇸 United States | |
| 6 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 7 | Austin | 🇺🇸 United States | |
| 8 | Toronto | 🇨🇦 Canada | |
| 9 | Bucharest | 🇷🇴 Romania | |
| 10 | Chicago | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Green Cone-Headed Planthopper sighting in Shenandoah National Park on a given day, based on 17 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 251st 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.
July to September
In those months about 10% of wildlife watchers report a Green Cone-Headed Planthopper in Shenandoah National Park on a given day, against under 5% in October to June, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Green Cone-Headed Planthopper sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Yes
Of the 2 parks where we can rate Green Cone-Headed Planthopper sightings, Shenandoah National Park has the highest daily chance: about 10%. Next come Great Smoky Mountains National Park (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Green Cone-Headed Planthopper is recorded against all the insects logged in Shenandoah National Park (17 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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