Belonochilus numenius
In 3 days ~20% in a week ~50%
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 →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Sycamore Seed Bug sighting in Madrid on a given day, based on 69 verified sightings from GBIF citizen-science data. It is the 80th most-seen of the 457 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
July
In that month about 20% of wildlife watchers report a Sycamore Seed Bug in Madrid on a given day, against under 5% in February–March and September–December, the lowest months. That is one of Madrid's driest months, with about 10 mm of rain against 65 mm in October.
Among the best
Of the 15 cities where we can rate Sycamore Seed Bug sightings, Madrid ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Valencia (Spain, about 10%) and Barcelona (Spain, about 10%).
Same family: Lygaeidae
The closest relatives of the Sycamore Seed Bug that you can see in Madrid (family Lygaeidae, Seed Bugs) are Indian Milkweed Bug (about 10%), Cretan Seed Bug (about 10%) and Elm Seed Bug (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Sycamore Seed Bug is recorded against all the insects logged in Madrid (69 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.
