Melitaea didyma
In 3 days ~20% in a week ~40%
Melitaea didyma, the spotted fritillary or red-band fritillary, is a Palearctic butterfly of the family Nymphalidae. Melitaea didyma is a medium-sized butterfly with a wingspan reaching 35–50 millimetres (1.4–2.0 in). The overside of the wings is a bright orange-brown with dark brown markings arranged in rows, which are quite variable in quantity and size. Sometimes the colour of the females is a duller orange, shaded with grey-green. The underside of the wings is chequered pale yellow and pale orange. M. didyma has seasonal forms and sexual dimorphism.
The male is fiery red, with a narrow dentate black distal border and a moderate number of small black dots and spots, which are dispersed over the basal half of the wing and end with a short band extending beyond the cell from the costa into the disc. On the underside, which is very abundantly marked with small black dots and hooks, a flexuose subbasal band and a curved submarginal one are situated on a delicately greenish, or yellowish, white ground. In the female the forewing and the anal area of the hindwing are much paler, being moreover dusted with blackish, while the costal half of the hindwing has preserved the... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Vanoise National Park | 🇫🇷 France | |
| 2 | Aigüestortes National Park | 🇪🇸 Spain | |
| 3 | Mercantour National Park | 🇫🇷 France | |
| 4 | Cévennes National Park | 🇫🇷 France | |
| 5 | Ecrins National Park | 🇫🇷 France | |
| 6 | Pyrénées National Park | 🇫🇷 France | |
| 7 | Triglav National Park | 🇸🇮 Slovenia | |
| 8 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 9 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
With luck
About 10% of wildlife watchers report a Spotted Fritillary sighting in Sierra de Guadarrama National Park on a given day, based on 46 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 130th most-seen of the 597 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
July
In that month about 20% of wildlife watchers report a Spotted Fritillary in Sierra de Guadarrama National Park on a given day, against under 5% in September to May, the lowest months. That is one of Sierra de Guadarrama National Park's driest months, with about 20 mm of rain against 110 mm in November.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Spotted Fritillary sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
9th of 9
Of the 9 parks where we can rate Spotted Fritillary sightings, Sierra de Guadarrama National Park ranks 9th at about 10%. The best odds are in Vanoise National Park (France, about 30%), Aigüestortes National Park (Spain, about 30%) and Mercantour National Park (France, about 30%).
Same genus: Melitaea
The closest relatives of the Spotted Fritillary that you can see in Sierra de Guadarrama National Park (genus Melitaea) are Knapweed Fritillary (about 10%), Lesser Spotted Fritillary (about 10%) and Glanville Fritillary (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Spotted Fritillary is recorded against all the insects logged in Sierra de Guadarrama National Park (46 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.
