Glaucopsyche melanops
In 3 days ~20% in a week ~50%
Glaucopsyche melanops, the black-eyed blue, is a butterfly of the family Lycaenidae. It is found in the western part of Southern Europe and North Africa. The length of the forewings is 11–13 mm. The butterfly flies from May to July depending on the location.
The larvae feed on Fabaceae species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Monfragüe National Park | 🇪🇸 Spain | |
| 2 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 3 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
With luck
About 10% of wildlife watchers report a Black-Eyed Blue sighting in Sierra Nevada National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 390th most-seen of the 479 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.
April and May
In those months about 20% of wildlife watchers report a Black-Eyed Blue in Sierra Nevada National Park on a given day, against under 5% in June to March, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Black-Eyed Blue sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 3
Of the 3 parks where we can rate Black-Eyed Blue sightings, Sierra Nevada National Park ranks 2nd at about 10%. The best odds are in Monfragüe National Park (Spain, about 20%).
Same family: Lycaenidae
The closest relatives of the Black-Eyed Blue that you can see in Sierra Nevada National Park (family Lycaenidae, Gossamer-winged Butterflies) are Small Copper (about 30%), Baton Blue (about 30%) and Pea Blue (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Black-Eyed Blue is recorded against all the insects logged in Sierra Nevada National Park (5 verified sightings from 2019 to 2026), 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.
