Arocatus melanocephalus
In 3 days ~10% in a week ~20%
Arocatus melanocephalus, the elm seed bug, is a Heteroptera in the family Lygaeidae. The species was initially described by Johan Christian Fabricius in 1798, and Maximilian Spinola designated it to be the type species of the genus Arocatus in 1837. This bug is native to Europe but has been introduced to North America.
The Danish zoologist Johan Christian Fabricius named this species in 1798, placing it in the genus Lygaeus. When the Italian entomologist Maximilian Spinola named the genus Arocatus in 1837, he designated Fabricius's Lygaeus melanocephalus as its type species. In 1999, Jean Péricart designated a female lectotype in the University of Copenhagen Zoological Museum.
Lygaeus pruinosus, a nomen nudum referring to this species, was named by Eduard Friedrich Eversmann in 1837. Vasily Evgrafovich Yakovlev synonymized this name with A. melanocephalus in 1875. The French entomologist Charles Jean-Baptiste Amyot referred to this species as Arocatus using his system of uninonial nomenclature in a work later invalidated by the International Commission on Zoological Nomenclature.
As of 2017, three subspecies are recognized: the nominate subspecies... Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report an Elm Seed Bug sighting in Vancouver on a given day, based on 23 verified sightings from GBIF citizen-science data. It is the 192nd most-seen of the 482 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.
November
In that month about 10% of wildlife watchers report an Elm Seed Bug in Vancouver on a given day, against under 5% in December to October, the lowest months. That is one of Vancouver's wettest months, with about 210 mm of rain against 25 mm in July.
15th of 17
Of the 17 cities where we can rate Elm Seed Bug sightings, Vancouver ranks 15th at under 5%. The best odds are in Almaty (Kazakhstan, about 10%), Salt Lake City (United States, about 10%) and Berlin (Germany, about 10%).
GBIF citizen-science records
It is estimated from how often the Elm Seed Bug is recorded against all the insects logged in Vancouver (23 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.
