Longistigma caryae
In 3 days ~10% in a week ~20%
Longistigma caryae, the giant bark aphid, is a species of giant aphid in the family Aphididae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Congaree National Park | 🇺🇸 United States | |
| 2 | Shenandoah National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Washington | 🇺🇸 United States | |
| 2 | Philadelphia | 🇺🇸 United States | |
| 3 | Miami | 🇺🇸 United States | |
| 4 | Houston | 🇺🇸 United States | |
| 5 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Giant Bark Aphid sighting in Philadelphia on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 510th most-seen of the 632 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
May
In that month about 10% of wildlife watchers report a Giant Bark Aphid in Philadelphia on a given day, against under 5% in June to April, the lowest months.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Giant Bark Aphid 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 5 cities where we can rate Giant Bark Aphid sightings, Philadelphia ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Washington (United States, under 5%).
Same family: Aphididae
The closest relatives of the Giant Bark Aphid that you can see in Philadelphia (family Aphididae, Aphids) are Oleander Aphid (about 10%), Witch-Hazel Cone Gall Aphid (about 10%) and Beech Blight Aphid (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Giant Bark Aphid is recorded against all the insects logged in Philadelphia (7 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.
