Mediterranean Pale Glow-Worm

Mediterranean Pale Glow-Worm

Nyctophila reichii

Daily sighting probability ~20% · Possible
at Barcelona

In 3 days ~50% in a week ~80%

124 Verified sightings at Barcelona
60 In all 4 parks From 2019 to 2026
May Best month
☀️🌙 Day & Night When it's spotted

About the Mediterranean Pale Glow-Worm

Nyctophila reichii, commonly known as the Mediterranean firefly, is a species of firefly. The species is very common in the southern and eastern part of the Iberian Peninsula. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Sierra Nevada National Park 🇪🇸 Spain
~20%
2 Sierra de Guadarrama National Park 🇪🇸 Spain
~10%
3 Cévennes National Park 🇫🇷 France
<5%
4 Pyrénées National Park 🇫🇷 France
<5%

Cities Where Found

# City Country Daily sighting probability
1 Barcelona 🇪🇸 Spain
~20%
2 Valencia 🇪🇸 Spain
~10%
3 Lisbon 🇵🇹 Portugal
<5%

Before you go

What are the chances of seeing a Mediterranean Pale Glow-Worm in Barcelona?

Possible

About 20% of wildlife watchers report a Mediterranean Pale Glow-Worm sighting in Barcelona on a given day, based on 124 verified sightings from GBIF citizen-science data. It is the 18th most-seen of the 381 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.

When is the best time to see a Mediterranean Pale Glow-Worm in Barcelona?

May and October

In those months about 30% of wildlife watchers report a Mediterranean Pale Glow-Worm in Barcelona on a given day, against about 10% in February and July–September, the lowest months.

What time of day is best to see a Mediterranean Pale Glow-Worm?

Between 8 and 11 pm

Across all the parks we cover, that three-hour window holds the most Mediterranean Pale Glow-Worm sightings with a recorded time, and about half of them come between 6 am and 6 pm: it is seen both by day and at night.

Is Barcelona the best place to see a Mediterranean Pale Glow-Worm?

Yes

Of the 3 cities where we can rate Mediterranean Pale Glow-Worm sightings, Barcelona has the highest daily chance: about 20%. Next come Valencia (Spain, about 10%) and Lisbon (Portugal, under 5%).

Where does the Mediterranean Pale Glow-Worm sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Mediterranean Pale Glow-Worm is recorded against all the insects logged in Barcelona (124 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.

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