Apollo butterfly (Parnassius apollo)

Apollo butterfly
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Apollo butterfly fact file

Apollo butterfly description

GenusParnassius (1)

The Apollo butterfly (Parnassius apollo) is a beautiful white butterfly, decorated with large black spots on the forewings and red eye-spots on the hindwings (4). These striking red eye-spots can vary in size and form depending on the location of the Apollo butterfly, and the bright red colour often fades in the sun, causing the eye-spots of older individuals to appear more orange (5) (6). The wings are shiny, with slightly transparent edges (2), and some individuals are darker (melanistic); a general phenomenon common in many butterflies (6). The caterpillars of this species are velvety black with orange-red spots along the sides (4).  As well as being a great deal of individual variation in the appearance of the Apollo butterfly, a number of subspecies have also been described (7)

Apolo, Mariposa Apollo.
Wingspan: 7 - 8.4 cm (2)

Apollo butterfly biology

Adult Apollo butterflies are seen on the wing in mid-summer (2), feeding on nectar produced by flowers (8). The females lay eggs, which over-winter and hatch in spring the following year (5) (6). The resulting caterpillars feed on stonecrop (Sedum species) and houseleek (Sempervivum species) (4). When the caterpillar is fully-grown it will pupate on the ground, forming a loose cocoon from which the adult butterfly emerges following metamorphosis (2).


Apollo butterfly range

The Apollo butterfly is found throughout Europe, including Fennoscandia, into central Asia (4).


Apollo butterfly habitat

The Apollo butterfly inhabits mountain meadows and pastures, up to 2,000 metres above sea level (2), where there are plenty of nectar-providing flowers. Apollo caterpillars require stonecrop (Sedum species)and houseleek plants (Sempervivum species) which grow on barren rocky outcrops or gravel. Research has shown that it is vital for this species that the rocky outcrops, (with stonecrops and houseleek plants), are situated in close proximity to meadows and other nectar-rich areas (8).


Apollo butterfly status

The Apollo butterfly is classified as Vulnerable (VU) on the IUCN Red List (1), and listed on Appendix II of CITES (3).

IUCN Red List species status – Vulnerable


Apollo butterfly threats

The beautiful Apollo butterfly has long been prized by collectors, who aim to possess as many of the variants as possible. While over-collecting is believed to have caused populations to decline in some areas, such as in Spain and Italy, habitat change is thought to be a far more significant threat to this species’ survival (5). Plantations of conifers, the succession of suitable habitat to scrubland, agriculture, and urbanization have all reduced the habitat of the Apollo butterfly. Climate change and acid rain have also been implicated in this species decline in Fennoscandia. In addition, motor vehicles have been cited as a cause of Apollo butterfly mortalities; vehicles on a motorway system near Bozen in South Tyrol, Italy, are said to have nearly wiped out a race of the Apollo (5).         


Apollo butterfly conservation

Laws exist to protect the Apollo butterfly in many countries, and it is also listed on Appendix II on the Convention on International Trade in Endangered Species (CITES), which restricts trade in this species (3) (5). However, these laws focus on the protection of individuals, rather than their habitat, and so may do little to mitigate the greatest threat that populations face (5). Fortunately, there are a number of projects specifically working to save this Vulnerable insect. A conservation programme in Pieniny National Park saved a subspecies of the Apollo butterfly that had declined to just 20 individuals in the early 1990s, through a combination of captive breeding and habitat protection (9). In south-west Germany, conservationists are working with shepherds to ensure favourable conditions for the butterfly, which share their grassland habitat with sheep. For example, grazing periods have been shifted to avoid the Apollo butterfly larvae stage, which is vulnerable to being trampled (10). With the continuation of these tremendous efforts, there is hope for this beautiful butterfly.

View information on this species at the UNEP World Conservation Monitoring Centre.

Find out more

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Authenticated (11/04/08) by Dr Marianne Fred, Post-Doctoral Researcher, Coastal Research Unit, Aronia/Åbo Akademi.



A sheath of silk, which is spun around the pupae of some insects (a pupa is a stage in an insect’s development, when huge changes occur that reorganise the larval form into the adult form. In butterflies the pupa is also called a chrysalis).
A geographic term used to describe the Scandinavian Peninsula, the Kola Peninsula, Karelia and Finland.
Stage in an animal’s lifecycle after it hatches from the egg. Larvae are typically very different in appearance to adults; they are able to feed and move around but usually are unable to reproduce.
An abrupt physical change from the larval to the adult form.
The process of forming a pupa, the stage in an insect's development, when huge changes occur that reorganise the larval form into the adult form. In butterflies the pupa is also called a chrysalis.
A different race of a species, which is geographically separated from other populations of that species.


  1. IUCN Red List (September, 2007)
  2. Still, J. (1996) Butterflies and Moths of Britain and Europe. Harper Collins, London.
  3. CITES (April, 2003)
  4. Carter, D. (2000) Butterflies and Moths. Dorling Kindersley, London.
  5. Collins, N.M. and Morris, M.G. (1985) Threatened Swallowtail Butterflies of the World. IUCN, Gland, Switzerland and Cambridge, UK.
  6. Fred, M. (2008) Pers. comm.
  7. Smart, P. (1975) The Illustrated Encyclopedia of the Butterfly World. Hamlyn Publishing Group Ltd, London.
  8. Fred, M.S., O’Hara, R.B. and Brommer, J.E. (2006) Consequences of the spatial configuration of resources for the distribution and dynamics of the endangered Parnassius apollo butterfly. Biological Conservation, 130: 183-192.
  9. Witkowsky, Z., Budzik, J. and Kosior, A. (1992) Restoration of the Apollo butterfly in Pieniny National Park. Chrońmy Przyrodę Ojczystą, 1992: 3-4.
  10. Dolek, M. and Geyer, A. (2002) Conserving biodiversity on calcareous grasslands in the Franconian Jura by grazing: a comprehensive approach. Biological Conservation, 104: 351-360.

Image credit

Apollo butterfly  
Apollo butterfly

© Jean E. Roche / naturepl.com

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