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- Speyeria idalia ist ein in der Mitte Nordamerikas vorkommender Schmetterling aus der Familie der Edelfalter (Nymphalidae). (de)
- Speyeria idalia est une espèce nord-américaine de lépidoptères de la famille des Nymphalidae et de la sous-famille des Heliconiinae. (fr)
- The regal fritillary (Speyeria idalia) is a striking nymphalid butterfly found among some of the remaining tallgrass and mixed-grass prairies in the east-central United States. This prairie-specialist butterfly has a characteristic deep orange color and unmistakable dark hindwings with two bands of spots. On the female, both bands of spots are white. However, on the male, the outer band of spots is orange in color. Females also tend to be slightly larger than males. The ventral surface of the hindwings is olive brown to black in color with bold silvery white spots. The wingspan of S. idalia usually measures 68–105 millimetres (2.7–4.1 in). Flight is in the summertime from approximately June to September and adults tend to be swift in flight, coasting close to the ground. It is listed as a species of special concern and believed extirpated in the US state of Connecticut. Regal fritillary larvae are approximately 0.08 inches long after they hatch and reach a length of approximately 1.75 inches when fully developed. The mature larvae have a black body with yellowish-orange bands and stripes. There are yellowish middorsal and lateral stripes and a number of dorsal, subdorsal, and lateral fleshy spines extending from the body. The head of the mature larvae is rounded and small, orangish-red on top and black underneath. The larval food source for the regal fritillary and all members of the genus Speyeria are violets (Viola spp.). The violets are an extremely important component of habitat sustainability for the regal fritillary and there is a correlation between the number of violets present and the number of butterflies found in a given area. Violet species that the larvae feed on include Viola pedata (bird's-foot violet), V. pedatifida (blue prairie violet), V. papilionacea (common blue violet), V. lanceolata (lance-leafed violet), V. nuttallii (Nuttall's violet), V. sagittata (arrowleaf violet), and V. tricolor (Johnny Jumpup). These various violet species are associated with the different areas of the regal fritillary's range. For example, the bird's-foot violet and the prairie violet tend to be the preferred larval food source for the regal in the Midwest and Great Plains regions. The adult butterflies may feed on a variety of nectar plants and their availability throughout the summer flight time can be as important as the presence of larval food plants in determining whether an area can support populations of butterfly species. Milkweeds, thistles, coneflowers, blazing-stars, bergamots, clovers, goldenrods, and ironweeds are some of the most important nectar sources for adult regal fritillaries. Milkweeds and thistles have been observed to be the preferred nectar source throughout the regal fritillary's range. These two types of plants provide a constant supply of nectar due to their staggered growth times. Common milkweed starts blooming when male regal fritillaries begin to emerge early in the summer and thistles tend to bloom later in the season which is crucial to females approaching oviposition. (en)
- Speyeria idalia is een vlinder uit de familie van de Nymphalidae. De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1773 door Dru Drury. (nl)
- Speyeria idalia är en fjärilsart som beskrevs av Dru Drury 1773. Speyeria idalia ingår i släktet Speyeria och familjen praktfjärilar. Inga underarter finns listade i Catalogue of Life. (sv)
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- Speyeria idalia1.jpg (en)
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- Speyeria idalia range map.JPG (en)
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- idbrock (en)
- iddavis (en)
- idedwards (en)
- idkelly (en)
- idkopper (en)
- idmason (en)
- idpowell (en)
- idselby (en)
- idswengel (en)
- idvaughan (en)
- idwagner (en)
- idwildearth (en)
- idwilliams (en)
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- 0001-04-19 (xsd:gMonthDay)
- Kelly, L. and Debinski, D. 1998. Relationship of Host Plant Density to Size and Abundance of the Regal Fritillary Speyeria idalia Dury . Journal of the Lepidopterists' Society 52: 262-276. (en)
- Brock, J. P. and Kaufman, K. 2003. Field Guide to Butterflies of North America. Pages 158-159 in T. Hillstar Editions L.C. Houghton Mifflin Company, New York, New York. (en)
- Davis, J. D., Debinski, D. M., and Danielson, B. J. 2007. Local and Landscape Effects on the Butterfly Community in Fragmented Midwest USA Prairie Habitats. Landscape Ecology 22: 1341-1354 (en)
- Selby, G. 2007. Regal Fritillary : A Technical Conservation Assessment. USDA Forest Service, Rocky Mountain Region, Species Conservation Project. Available in PDF from fs.fed.us (en)
- Vaughan, M. and Shepherd, M. 2005. Speyeria idalia , 1773 Regal Fritillary Species Profile. Available in PDF from xerces.org (en)
- Edwards, W. H. 1879. Description of the preparatory stages of Argynnis idalia Drury. Canadian Entomologist. 11: 217-219. (en)
- Williams, B. L., Brawn, J. D., Paige, K. N. 2003. Landscape scale genetic effects of habitat fragmentation on a high gene flow species: Speyeria idalia . Molecular Ecology. 12: 11-20. (en)
- Kopper, B. J., Shengqiang, S., Charlton, R. E., and Ramaswamy, S. B. 2001. Evidence for Reproductive Diapause in the Fritillary Speyeria idalia . Entomological Society of America 94: 427-432. (en)
- Powell, A., Busby, W. H., and Kindscher, K. 2006. Status of the regal fritillary and effects of fire management on its abundance in northeastern Kansas, USA. Journal of Insect Conservation. 11: September, 2007. (en)
- Mason, J. Regal Fritillary. Great Plains Nature Center Wichita, KS. Available from gpnc.org (en)
- Wagner, D. 1995. Rearing regals for reintroduction: playing the odds but still losing ground. North American Butterfly Association. Available from naba.org (en)
- Swengel, A. B. 2004. Good News for Regal Fritillaries. Wisconsin Entomological Society Newsletter 31: 3-4. (en)
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- Speyeria idalia ist ein in der Mitte Nordamerikas vorkommender Schmetterling aus der Familie der Edelfalter (Nymphalidae). (de)
- Speyeria idalia est une espèce nord-américaine de lépidoptères de la famille des Nymphalidae et de la sous-famille des Heliconiinae. (fr)
- Speyeria idalia is een vlinder uit de familie van de Nymphalidae. De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1773 door Dru Drury. (nl)
- Speyeria idalia är en fjärilsart som beskrevs av Dru Drury 1773. Speyeria idalia ingår i släktet Speyeria och familjen praktfjärilar. Inga underarter finns listade i Catalogue of Life. (sv)
- The regal fritillary (Speyeria idalia) is a striking nymphalid butterfly found among some of the remaining tallgrass and mixed-grass prairies in the east-central United States. This prairie-specialist butterfly has a characteristic deep orange color and unmistakable dark hindwings with two bands of spots. On the female, both bands of spots are white. However, on the male, the outer band of spots is orange in color. Females also tend to be slightly larger than males. The ventral surface of the hindwings is olive brown to black in color with bold silvery white spots. The wingspan of S. idalia usually measures 68–105 millimetres (2.7–4.1 in). Flight is in the summertime from approximately June to September and adults tend to be swift in flight, coasting close to the ground. It is (en)
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- Speyeria idalia (de)
- Speyeria idalia (fr)
- Speyeria idalia (nl)
- Regal fritillary (en)
- Speyeria idalia (sv)
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