Ergates faber
In 3 days ~10% in a week ~20%
Ergates faber is a species of beetle belonging to the family Cerambycidae. It is the only species in the monotypic genus Ergates. It is native to Europe. Larvae feed on sapwood. Development can take between three and twelve years, although pupation occurs over the course of a few weeks in June through July. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cévennes National Park | 🇫🇷 France | |
| 2 | Pyrénées National Park | 🇫🇷 France |
Rare
Under 5% of wildlife watchers report an Ergates faber sighting in Porto on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 457th most-seen of the 498 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.
August
In that month about 10% of wildlife watchers report an Ergates faber in Porto on a given day, against under 5% in September to July, the lowest months. That is one of Porto's driest months, with about 20 mm of rain against 140 mm in January.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Ergates faber sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Among the best
Of the 2 cities where we can rate Ergates faber sightings, Porto ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Barcelona (Spain, under 5%).
GBIF citizen-science records
It is estimated from how often the Ergates faber is recorded against all the insects logged in Porto (5 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.
