Niphonyx segregata
In 3 days ~10% in a week ~30%
Niphonyx is a monotypic genus of moths in the family Noctuidae erected by Shigero Sugi in 1982. Its only species, Niphonyx segregata, the hops angleshade, was first described by Arthur Gardiner Butler in 1878. It is endemic to eastern Asia, including the Russian Far East, the Korean Peninsula, Japan, China and Taiwan. It was introduced to the north-eastern United States in the 1990s and is found from Connecticut south to at least Delaware.
The wingspan is 25–30 mm. There are two generations per year in North America. The larvae feed on hop species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Seoul | 🇰🇷 South Korea | |
| 2 | Beijing | 🇨🇳 China | |
| 3 | Baltimore | 🇺🇸 United States | |
| 4 | Tokyo | 🇯🇵 Japan | |
| 5 | Washington | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Hops Angleshade sighting in Beijing on a given day, based on 15 verified sightings from GBIF citizen-science data. It is the 171st most-seen of the 401 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
July and August
In those months about 10% of wildlife watchers report a Hops Angleshade in Beijing on a given day, against under 5% in September to June, the lowest months. Those are among Beijing's wettest months, with about 130 mm of rain a month against almost none in January.
2nd of 5
Of the 5 cities where we can rate Hops Angleshade sightings, Beijing ranks 2nd at under 5%. The best odds are in Seoul (South Korea, about 10%).
GBIF citizen-science records
It is estimated from how often the Hops Angleshade is recorded against all the insects logged in Beijing (15 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.
