Glaucopsyche melanops
In 3 days ~50% in a week ~80%
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 |
Possible
About 20% of wildlife watchers report a Black-Eyed Blue sighting in Monfragüe National Park on a given day, based on 20 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 20th most-seen of the 84 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
April
In that month about 40% of wildlife watchers report a Black-Eyed Blue in Monfragüe National Park on a given day, against under 5% in June to February, the lowest months. That is one of Monfragüe National Park's wettest months, with about 70 mm of rain against almost none in July.
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.
Yes
Of the 3 parks where we can rate Black-Eyed Blue sightings, Monfragüe National Park has the highest daily chance: about 20%. Next come Sierra Nevada National Park (Spain, about 10%) and Sierra de Guadarrama National Park (Spain, under 5%).
Same family: Lycaenidae
The closest relatives of the Black-Eyed Blue that you can see in Monfragüe National Park (family Lycaenidae, Gossamer-winged Butterflies) are Small Copper (about 30%), Fixsenia esculi (about 20%) and Southern Brown Argus (about 20%), 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 Monfragüe National Park (20 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.
