|Dark green fritillary|
|Male, Val d'Aosta, Italy|
|Female, Elsenborn, Belgium|
The dark green fritillary (Speyeria aglaja, previously known as Argynnis aglaja) is a species of butterfly in the family Nymphalidae. The insect has a wide range in the Palearctic ecozone - Europe, Morocco, Iran, Siberia, Central Asia, China, Korea and Japan.
Description in Seitz
The large fritillary is fiery reddish yellow above, the basal area of the male being always duller. The markings are constant: a black margin, a row of deep black but thin marginal arcs, a very straight, central row of dots, of which only the last one of the forewing is shifted distad; between this row of dots and the base there are six thin black transverse bands extending from the subcostal vein into the wing. The underside of the hindwing is characteristic; it bears numerous silver-spots on a partly verdigris partly leather-yellow ground, but never a row of ocelli in the marginal area, as is the case in the forms of the Niobe fritillary (Fabriciana niobe) and high brown fritillary (F. adippe).
- S. a. aglaja Southern Europe, Central Europe, Caucasus, Altai, Sayan, West Siberia, South Siberia
- S. a. borealis (Strand, 1901) Europe, Siberia, Russian Far East, Kamchatka
- S. a. lyauteyi (Oberthür, 1920) Morocco (Middle Atlas)
- S. a. excelsior (Rothschild, 1933) Morocco (Rif Mountains)
- S. a. ottomana (Röber, 1896) Armenia, Talys, Kopet Dagh
- S. a. gigasvitatha (Verity, 1935) Tian-Shan, Ghissar, Darvaz, Alai, South Altai
- S. a. vitatha (Moore, 1874) Pamirs
- S. a. clavimacula (Matsumura, 1929) South Ussuri
- S. a. kenteana (Stichel, 1901) Transbaikalia, North Ussuri, Amur
- S. a. tonnai (Matsumura, 1928) Sakhalin
- S. a. bessa (Fruhstorfer, 1907) ?
The dark green fritillary uses violets within bracken mosaics frequently consisting of one-third bracken and two-thirds grass, often on the edges of suitable high brown fritillary habitat. Their distribution can be found on the NBN website.
- Emmet, A.M., J. Heath et al. (Ed.), 1990. The Butterflies of Great Britain and Ireland. The Moths and Butterflies of Great Britain and Ireland Vol. 7 Part 1 (Hesperiidae to Nymphalidae). Harley Books, Colchester, UK. 370p.
- Tomlinson, D. and R. Still, 2002. Britain's Butterflies. WildGuides, Old Basing, UK. 192p.
- Bracken for Butterflies Leaflet by Butterfly Conservation
- Crory, Andrew. 2016. Fritillary Butterflies. The Irish Hare. Ulster Wildlife Membership Magazine. Issue 113 p. 4
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