Woolly Alder Aphid

Woolly Alder Aphid

Prociphilus tessellatus

Daily sighting probability <5% · Rare
at New York City

In 3 days ~10%

16 Verified sightings at New York City
October Best month

About the Woolly Alder Aphid

Prociphilus tessellatus, known generally as the woolly alder aphid or maple blight aphid, is a species of aphid in the family Aphididae. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability

More parks will be added in future updates.

Cities Where Found

# City Country Daily sighting probability
1 Edmonton 🇨🇦 Canada
~10%
2 Toronto 🇨🇦 Canada
<5%
3 Boston 🇺🇸 United States
<5%
4 Washington 🇺🇸 United States
<5%
5 Minneapolis [Saint Paul] 🇺🇸 United States
<5%
6 Chicago 🇺🇸 United States
<5%
7 New York City 🇺🇸 United States
<5%

Before you go

What are the chances of seeing a Woolly Alder Aphid in New York City?

Rare

Under 5% of wildlife watchers report a Woolly Alder Aphid sighting in New York City on a given day, based on 16 verified sightings from GBIF citizen-science data. It is the 1034th most-seen of the 1623 insects we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.

When is the best time to see a Woolly Alder Aphid in New York City?

Any time of year

In every month with enough records, under 5% of wildlife watchers report a Woolly Alder Aphid in New York City on a given day, so our monthly data shows no clear season.

Is New York City the best place to see a Woolly Alder Aphid?

7th of 7

Of the 7 cities where we can rate Woolly Alder Aphid sightings, New York City ranks 7th at under 5%. The best odds are in Edmonton (Canada, about 10%), Toronto (Canada, under 5%) and Boston (United States, under 5%).

Which relatives of the Woolly Alder Aphid live in New York City?

Same family: Aphididae

The closest relatives of the Woolly Alder Aphid that you can see in New York City (family Aphididae, Aphids) are Oleander Aphid (about 10%) and Witch-Hazel Cone Gall Aphid (about 10%), with each one's daily chance of a sighting.

Where does the Woolly Alder Aphid sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Woolly Alder Aphid is recorded against all the insects logged in New York City (16 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.

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