Phosphaenus hemipterus
In 3 days ~10% in a week ~30%
Phosphaenus hemipterus, the short-winged firefly or lesser glow worm, is a beetle in the monotypic genus Phosphaenus and the family Lampyridae. It is found in the Mediterranean, in Central Europe, west to the Atlantic Ocean and north to the edge of Scandinavia and in England. In North America, the species has been introduced. It inhabits meadows, floodplains, forest edges, and dry slopes, but also parks and gardens. In Britain, this species is fairly rare compared to the common glow-worm (Lampyris noctiluca). Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Lesser Black Glow-Worm sighting in Essen on a given day, based on 11 verified sightings from GBIF citizen-science data. It is the 231st most-seen of the 434 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.
February–March and June
In those months about 10% of wildlife watchers report a Lesser Black Glow-Worm in Essen on a given day, against under 5% in April–May and July–January, the lowest months.
Among the best
Of the 4 cities where we can rate Lesser Black Glow-Worm sightings, Essen ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Porto (Portugal, about 10%).
GBIF citizen-science records
It is estimated from how often the Lesser Black Glow-Worm is recorded against all the insects logged in Essen (11 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.
