The Small Pearl-bordered Fritillary
The Heliconiinae, commonly called heliconians or longwings, are a subfamily of the brush-footed butterflies . They can be divided into 45-50 genera and were sometimes treated as a separate family Heliconiidae within the Papilionoidea...
), called the Silver-bordered Fritillary
in North America, is a butterfly
A butterfly is a mainly day-flying insect of the order Lepidoptera, which includes the butterflies and moths. Like other holometabolous insects, the butterfly's life cycle consists of four parts: egg, larva, pupa and adult. Most species are diurnal. Butterflies have large, often brightly coloured...
of the Nymphalidae family. The Peggy Notebaert Nature Museum
The Peggy Notebaert Nature Museum - The Museum of the Chicago Academy of Sciences is a nature museum located in Chicago, Illinois. The museum, which opened in a new facility in October 1999, is located at the intersection of Fullerton Parkway and Cannon Drive in Lincoln Park. The museum focuses on...
in Chicago, Illinois is conducting a DNA research experiment on Boloria selene
Similar to Pearl-bordered Fritillary
The Pearl-bordered Fritillary is a butterfly of the Nymphalidae family.It is orange with black spots on the upperside of its wing and has a wingspan of 38–46 mm. On the underside of the wings there is a row of silver pearly markings along the edge, which give the species its name...
but has black chevrons on edge of wings, large central black dot on each one and white pearls (compared to 2 of the other species) on the underside.
Widespread across central and northern Europe and through Asia to Korea and also occurs in North America. Range appears stable through much of Europe but declines have been reported in at least nine countries.
Widespread across upland and western Britain, but not found in central, eastern England or Ireland. NBN Gateway distribution profile can be accessed searchnbn.net
. Its numbers are declining in England. It occurs in damp, grassy habitats, woodland clearings and moorland. Has also been found in dune slacks and coastal cliffs.
Foodplants and eggs
In the UK this species uses several species of violet as foodplant. In dryer areas Dog Violets are used whilst in wetter areas the foodplant is Bog Violet Viola palustris
Viola palustris is a perennial forb of the genus Viola. It inhabits moist meadows, marshes, and streambanks in northern parts of North America and Eurasia....
, or Marsh Violet growing amongst Purple Moor-grass or Tufted Hair-grass
Deschampsia cespitosa, commonly known as Tufted Hair-grass or Tussock grass is a perennial tufted plant in the grass family Poaceae...
. They prefer the damper areas more often. They occur amongst bracken
Bracken are several species of large, coarse ferns of the genus Pteridium. Ferns are vascular plants that have alternating generations, large plants that produce spores and small plants that produce sex cells . Brackens are in the family Dennstaedtiaceae, which are noted for their large, highly...
where this is shading the appropriate violet species.