How many butterfly species are found in Romania?

Romania has a recorded butterfly fauna of approximately 200–210 species — one of the highest totals in Europe, comparable to Bulgaria and Austria. The richness reflects the country's exceptional habitat diversity: the Carpathian arc provides the full range of altitude zones from foothill oak forest through beech forest and conifer belt to alpine meadow; Transylvania's enclosed plateau supports ancient flower-rich hay meadows largely unchanged since the Middle Ages; the Dobrogea region on the Black Sea coast is the most continental-steppic part of Romania, with a distinct xerophilous fauna; and the Danube Delta and its floodplains hold wetland-specialist species. This geographic variety, compressed into a country of 238,000 km², makes Romania one of the most rewarding butterfly destinations in Europe for the time invested.

What makes Romania special for butterfly conservation?

Romania holds some of the last large populations in Europe of several butterfly species that have declined catastrophically elsewhere. The large copper (Lycaena dispar) — Annex II species of the EU Habitats Directive — occurs in significant numbers in the Danube and Prut floodplains. Multiple Maculinea species (now Phengaris) — the large blue, scarce large blue, alcon blue, and dusky large blue — maintain populations in hay meadow complexes in Transylvania and Moldova that have been lost from most of Western Europe. The Transylvanian meadow landscape, maintained by traditional small-scale farming with horse-drawn equipment, represents a living agricultural museum of the pre-industrial European countryside — and its butterflies reflect that.

What is the best time to visit Romania for butterflies?

The peak butterfly season in Romania runs from late May through August. June is typically the richest month for total species diversity — the main brood of most temperate species is flying simultaneously, and altitude zones from valley to alpine are all accessible. The alpine season in the Carpathians (Bucegi, Retezat, Apuseni) peaks in July. For Dobrogea steppe species, May and early June provide the best conditions before summer heat reduces activity. The Transylvanian hay meadows are at their best in late June–early July when the first hay cut exposes the flower-rich sward. September–October sees the last brood of several species including clouded yellows and small blues along the Black Sea coast.

Butterfly Atlas

Butterflies of Romania

~2 min

Romania is a great European butterfly country — Carpathian wilderness, Transylvanian meadows and Danube Delta support over 200 species, many rare elsewhere.

Overview

Romania occupies the northeastern corner of the Balkan Peninsula, bordered by Ukraine and Moldova to the north and east, the Black Sea to the southeast, Bulgaria to the south, Serbia to the southwest, and Hungary to the west. At 238,000 km², it is the largest country in southeastern Europe.

The geographical structure of Romania is distinctive: the Carpathian arc sweeps in a great C-shape through the heart of the country, enclosing the Transylvanian plateau within its curve. Outside the Carpathians, three major plains extend in different directions — the Wallachian Plain to the south between the Carpathians and the Danube, the Moldavian Plain to the east, and the Dobrogea plateau along the Black Sea coast. The Danube Delta at the far east forms one of Europe's largest and most important wetland systems.

Each of these zones has a distinct butterfly fauna.

Habitats and butterfly communities

The Carpathian arc

The Romanian Carpathians — including the Southern Carpathians (Transylvanian Alps), Eastern Carpathians, and Western Carpathians (Apuseni) — are among the most ecologically intact mountain ranges in Europe. With the largest brown bear, wolf, and lynx populations in the EU, they represent a temperate wilderness unusual for a country of Romania's size and population.

For butterflies, the altitude gradient from foothill to alpine produces a complete succession of communities:

Oak and mixed forest zone (200–700 m): white admiral, purple emperor (Apatura iris), silver-washed fritillary, high brown fritillary, woodland browns
Beech forest zone (700–1,400 m): Scotch argus (Erebia aethiops), woodland ringlet (E. medusa), lesser marbled fritillary (Brenthis ino)
Subalpine meadow (1,400–2,000 m): mountain clouded yellow (Colias phicomone), shepherd's fritillary (Boloria pales), mountain ringlet (Erebia epiphron), violet copper (Lycaena helle)
Alpine zone (above 2,000 m): Apollo (Parnassius apollo), small Apollo (P. phoebus), Dewy ringlet (Erebia pandrose), the highest Erebia species

The Bucegi Mountains, rising above Sinaia and Buşteni, are the most accessible high-altitude butterfly site in Romania — a plateau above 2,000 m reached by cable car, with good Apollo populations on limestone outcrops and abundant Erebia in the surrounding grassland.

Retezat National Park (2,509 m peak) in the Southern Carpathians holds the largest undisturbed subalpine and alpine butterfly community in Romania, including all Carpathian Erebia species in their optimal habitats.

Transylvanian hay meadows

Inside the Carpathian arc, the Transylvanian plateau preserves one of the last extensive areas of traditionally managed European hay meadow. Small farms using horse-drawn equipment, hand-scything, and late hay cuts maintain meadow swards of extraordinary botanical richness — up to 50–80 plant species per 4 m² in the best examples. These meadows support the highest butterfly densities anywhere in central Europe:

Maculinea (Phengaris) blues: four species occur in Transylvania and adjacent Moldova
- Large blue (P. arion) — dependent on Thymus and Myrmica ant nests
- Alcon blue (P. alcon) — on Gentiana pneumonanthe in damp meadows
- Scarce large blue (P. teleius) and dusky large blue (P. nausithous) — on Sanguisorba officinalis
Marsh fritillary (Euphydryas aurinia) — in damper meadow sections with Succisa pratensis
Knapweed fritillary (Melitaea phoebe) and Glanville fritillary (M. cinxia)
Numerous Polyommatus and Lysandra blues on calcareous grassland edges

The areas around Sibiu (Hermannstadt) and the villages of the Saxon heartland (Viscri, Biertan, Criş) are particularly celebrated for meadow butterfly diversity and have attracted conservation attention from organisations including Rewilding Europe.

Dobrogea

The Dobrogea plateau, between the Danube and the Black Sea, is Romania's most continental region — hot, dry summers, cold winters, and a steppe character unlike anything else in the country. Its butterfly fauna reflects this distinctiveness:

Steppe fritillary (Melitaea arduinna) — virtually confined in Romania to Dobrogea
Eastern rock grayling (Hipparchia syriaca)
Large wall brown (Lasiommata maera) in its warmest, darkest forms
Numerous xerophilous Lycaenidae, including several Polyommatus and Plebeius species at their distribution limits
Scarce swallowtail (Iphiclides podalirius) in warm valley scrub

Danube Delta and floodplains

The Danube Delta — a UNESCO World Heritage Site and one of Europe's largest wetlands — adds a different community: wetland specialists of reed beds, riverside willows, and river islands.

Large copper (Lycaena dispar) — the most celebrated butterfly of the Danube floodplains; Romania holds one of Europe's largest populations in the Delta and along the lower Danube
Purple-shot copper (Lycaena alciphron) in drier grassland between river channels
Poplar admiral (Limenitis populi) in tall riparian poplar and willow forests
Migrant species arrive and rest along the Black Sea coast — painted ladies, clouded yellows, and occasionally vagrant species from Asia Minor

Conservation context

Romania's traditional agricultural landscape — maintained by small-scale farming, late hay cuts, and limited mechanisation in rural Transylvania and Moldova — is one of the most important butterfly conservation assets in Europe. However, it is under pressure:

Agricultural intensification: EU subsidy structures have driven mechanisation and earlier hay cuts, reducing the number of butterfly generations completing their life cycle before mowing
Agricultural abandonment: younger generations leaving villages leads to scrub invasion of meadows, particularly in remote valleys
Infrastructure development: road and tourism development pressure in the Carpathians threatens habitat connectivity
Wetland drainage: historical drainage of Danube floodplains has reduced large copper habitat; the surviving population depends on remaining unregulated sections

Romania's membership of the EU Habitats Directive protects key species (large copper, all Maculinea/Phengaris species, Apollo) and their habitats through the Natura 2000 network. But effective conservation requires agri-environment payments sufficient to make traditional farming economically viable — the fundamental challenge for all of Europe's meadow butterfly faunas.