Sycamore Seed Bug

Sycamore Seed Bug

Belonochilus numenius

Daily sighting probability <5% · Rare
at Washington

In 3 days ~10% in a week ~20%

16 Verified sightings at Washington
November Best month

About the Sycamore Seed Bug

Belonochilus is a genus of seed bugs in the family Lygaeidae. There is one described species in Belonochilus, B. numenius, the sycamore seed bug, making it a monotypic genus. It is native to North America, but is an invasive species in Europe. It primarily feeds on Platanus trees and lays its eggs on fruit, although some overwinter beneath the bark of the trees they feed on. 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 Valencia 🇪🇸 Spain
~10%
2 Barcelona 🇪🇸 Spain
~10%
3 Madrid 🇪🇸 Spain
~10%
4 Vienna 🇦🇹 Austria
~10%
5 Lyon 🇫🇷 France
~10%
6 Paris 🇫🇷 France
<5%
7 Bucharest 🇷🇴 Romania
<5%
8 Prague 🇨🇿 Czechia
<5%
9 Lisbon 🇵🇹 Portugal
<5%
10 Monterrey 🇲🇽 México
<5%

Before you go

What are the chances of seeing a Sycamore Seed Bug in Washington?

Rare

Under 5% of wildlife watchers report a Sycamore Seed Bug sighting in Washington on a given day, based on 16 verified sightings from GBIF citizen-science data. It is the 990th most-seen of the 1807 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.

When is the best time to see a Sycamore Seed Bug in Washington?

Any time of year

In every month with enough records, under 5% of wildlife watchers report a Sycamore Seed Bug in Washington on a given day, so our monthly data shows no clear season.

Is Washington the best place to see a Sycamore Seed Bug?

12th of 15

Of the 15 cities where we can rate Sycamore Seed Bug sightings, Washington ranks 12th at under 5%. The best odds are in Valencia (Spain, about 10%), Barcelona (Spain, about 10%) and Madrid (Spain, about 10%).

Which relatives of the Sycamore Seed Bug live in Washington?

Same family: Lygaeidae

The closest relatives of the Sycamore Seed Bug that you can see in Washington (family Lygaeidae, Seed Bugs) are Large Milkweed Bug (about 20%), False Milkweed Bug (about 10%) and Small Milkweed Bug (about 10%), with each one's daily chance of a sighting.

Where does the Sycamore Seed Bug sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Sycamore Seed Bug is recorded against all the insects logged in Washington (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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