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- Myrtles_silverspot_butterfly abstract "Myrtle’s silverspot, Speyeria zerene myrtleae, is a medium-sized butterfly in the brush foot family (Nymphalidae), an endangered subspecies of Zerene fritillary. It is endemic to California, where it is known from only about four locations just north of the San Francisco Bay Area, including two at Point Reyes National Seashore. Its wingspan is approximately 2.2 inches (56 mm). The upper surfaces of the wings are golden brown with numerous black spots and lines. The undersides are brown, orange and tan with black lines and silver and black spots. Larvae are dark-colored with many sharp branching spines on their backs. Myrtle's silverspot is larger and paler than the closely related Behrens' silverspot (Speyeria zerene behrensii), which is now limited to the vicinity of Point Arena in Mendocino County.The female lays a single brood of eggs in the dried herbage of violets, especially western dog violet (Viola adunca), the only known larval food plant. Upon hatching, the caterpillars wander a short distance and spin silk pads upon which they pass the winter. The larvae immediately seek out the food plant at the end of their diapause in the spring. After 7 to 10 weeks each larva pupates within a chamber of leaves it glues together with silk. Adults may emerge in about 2 weeks and can live for 3 weeks. The adult flight season may range from late June to early September. Adults feed on nectar from flowers including gumplants (Grindelia spp.), yellow sand verbena (Abronia latifolia), coyote mints (Monardella spp., especially Monardella undulata), bull thistle (Cirsium vulgare) and seaside daisy (Erigeron glaucus). Myrtle's silverspot is found in sand dune and coastal prairie habitat. Populations were formerly found in dunes and bluffs from San Mateo County north to the mouth of the Russian River in Sonoma County. The populations south of the Golden Gate apparently have been extirpated by urban development. Four populations are known to inhabit coastal terrace prairie, coastal bluff scrub, and associated non-native grassland habitats in western Marin and southwestern Sonoma Counties, including Point Reyes. Adult butterflies are typically found in areas that are sheltered from the wind, below 820 feet (250 m) elevation, and within 3 miles (4.8 km) of the coast.The butterfly was listed as an endangered species in 1992. Habitat loss due to residential and commercial land development has extirpated these butterflies from parts of their range and may threaten some of the remaining populations. Maintaining larval and nectar plants is critical for conservation of these butterflies. Changes in natural fire patterns, introduction of exotic plants, and successional changes in the plant community have reduced the availability of host plants. Either excessive or inadequate grazing activity can result in plant communities unfavorable to the butterflies. Measures for habitat improvement may include eradication of invasive exotics such as iceplant (Mesembryanthemum spp.) and identifying appropriate grazing and/or burning regimes in grassland and scrub areas. These butterflies are highly prized by insect collectors, and are vulnerable due to their small population. Silverspot butterfly larvae are also extremely sensitive to pesticides.".
- Myrtles_silverspot_butterfly class Insect.
- Myrtles_silverspot_butterfly conservationStatus "LE".
- Myrtles_silverspot_butterfly conservationStatusSystem "ESA".
- Myrtles_silverspot_butterfly family Nymphalidae.
- Myrtles_silverspot_butterfly genus Speyeria.
- Myrtles_silverspot_butterfly kingdom Animal.
- Myrtles_silverspot_butterfly order Lepidoptera.
- Myrtles_silverspot_butterfly phylum Arthropod.
- Myrtles_silverspot_butterfly species Speyeria_zerene.
- Myrtles_silverspot_butterfly thumbnail Myrtlessilverspot.jpg?width=300.
- Myrtles_silverspot_butterfly wikiPageID "12664045".
- Myrtles_silverspot_butterfly wikiPageLength "5795".
- Myrtles_silverspot_butterfly wikiPageOutDegree "47".
- Myrtles_silverspot_butterfly wikiPageRevisionID "678574618".
- Myrtles_silverspot_butterfly wikiPageWikiLink Abronia_latifolia.
- Myrtles_silverspot_butterfly wikiPageWikiLink Animal.
- Myrtles_silverspot_butterfly wikiPageWikiLink Arthropod.
- Myrtles_silverspot_butterfly wikiPageWikiLink Butterfly.
- Myrtles_silverspot_butterfly wikiPageWikiLink California.
- Myrtles_silverspot_butterfly wikiPageWikiLink Category:Butterflies_of_the_United_States.
- Myrtles_silverspot_butterfly wikiPageWikiLink Category:Endangered_fauna_of_California.
- Myrtles_silverspot_butterfly wikiPageWikiLink Category:Endemic_fauna_of_California.
- Myrtles_silverspot_butterfly wikiPageWikiLink Category:Speyeria.
- Myrtles_silverspot_butterfly wikiPageWikiLink Cirsium_vulgare.
- Myrtles_silverspot_butterfly wikiPageWikiLink Diapause.
- Myrtles_silverspot_butterfly wikiPageWikiLink Dune.
- Myrtles_silverspot_butterfly wikiPageWikiLink Ecological_succession.
- Myrtles_silverspot_butterfly wikiPageWikiLink Endangered_species.
- Myrtles_silverspot_butterfly wikiPageWikiLink Endemism.
- Myrtles_silverspot_butterfly wikiPageWikiLink Erigeron_glaucus.
- Myrtles_silverspot_butterfly wikiPageWikiLink Fire_regime.
- Myrtles_silverspot_butterfly wikiPageWikiLink Golden_Gate.
- Myrtles_silverspot_butterfly wikiPageWikiLink Grazing.
- Myrtles_silverspot_butterfly wikiPageWikiLink Grindelia.
- Myrtles_silverspot_butterfly wikiPageWikiLink Insect.
- Myrtles_silverspot_butterfly wikiPageWikiLink Introduced_species.
- Myrtles_silverspot_butterfly wikiPageWikiLink Larva.
- Myrtles_silverspot_butterfly wikiPageWikiLink Lepidoptera.
- Myrtles_silverspot_butterfly wikiPageWikiLink Local_extinction.
- Myrtles_silverspot_butterfly wikiPageWikiLink Marin_County,_California.
- Myrtles_silverspot_butterfly wikiPageWikiLink Mendocino_County,_California.
- Myrtles_silverspot_butterfly wikiPageWikiLink Mesembryanthemum.
- Myrtles_silverspot_butterfly wikiPageWikiLink Monardella.
- Myrtles_silverspot_butterfly wikiPageWikiLink Monardella_undulata.
- Myrtles_silverspot_butterfly wikiPageWikiLink Nymphalidae.
- Myrtles_silverspot_butterfly wikiPageWikiLink Pesticide.
- Myrtles_silverspot_butterfly wikiPageWikiLink Point_Arena,_California.
- Myrtles_silverspot_butterfly wikiPageWikiLink Point_Reyes_National_Seashore.
- Myrtles_silverspot_butterfly wikiPageWikiLink Pupa.
- Myrtles_silverspot_butterfly wikiPageWikiLink Russian_River_(California).
- Myrtles_silverspot_butterfly wikiPageWikiLink San_Francisco_Bay_Area.
- Myrtles_silverspot_butterfly wikiPageWikiLink San_Mateo_County,_California.
- Myrtles_silverspot_butterfly wikiPageWikiLink Silk.
- Myrtles_silverspot_butterfly wikiPageWikiLink Sonoma_County,_California.
- Myrtles_silverspot_butterfly wikiPageWikiLink Speyeria.
- Myrtles_silverspot_butterfly wikiPageWikiLink Speyeria_zerene.
- Myrtles_silverspot_butterfly wikiPageWikiLink Subspecies.
- Myrtles_silverspot_butterfly wikiPageWikiLink Viola_adunca.
- Myrtles_silverspot_butterfly wikiPageWikiLinkText "Myrtle's silverspot butterfly".
- Myrtles_silverspot_butterfly classis "Insecta".
- Myrtles_silverspot_butterfly familia Nymphalidae.
- Myrtles_silverspot_butterfly genus "Speyeria".
- Myrtles_silverspot_butterfly ordo Lepidoptera.
- Myrtles_silverspot_butterfly phylum "Arthropoda".
- Myrtles_silverspot_butterfly regnum "Animalia".
- Myrtles_silverspot_butterfly species "S. zerene".
- Myrtles_silverspot_butterfly status "LE".
- Myrtles_silverspot_butterfly statusSystem "ESA".
- Myrtles_silverspot_butterfly subspecies "S. z. myrtleae".
- Myrtles_silverspot_butterfly trinomial "Speyeria zerene myrtleae".
- Myrtles_silverspot_butterfly trinomialAuthority "Dos Passos & Grey, 1945".
- Myrtles_silverspot_butterfly wikiPageUsesTemplate Template:Convert.
- Myrtles_silverspot_butterfly wikiPageUsesTemplate Template:Reflist.
- Myrtles_silverspot_butterfly wikiPageUsesTemplate Template:Taxobox.
- Myrtles_silverspot_butterfly subject Category:Butterflies_of_the_United_States.
- Myrtles_silverspot_butterfly subject Category:Endangered_fauna_of_California.
- Myrtles_silverspot_butterfly subject Category:Endemic_fauna_of_California.
- Myrtles_silverspot_butterfly subject Category:Speyeria.
- Myrtles_silverspot_butterfly hypernym Butterfly.
- Myrtles_silverspot_butterfly type Animal.
- Myrtles_silverspot_butterfly type Eukaryote.
- Myrtles_silverspot_butterfly type Insect.
- Myrtles_silverspot_butterfly type Species.
- Myrtles_silverspot_butterfly type Redirect.
- Myrtles_silverspot_butterfly type Thing.
- Myrtles_silverspot_butterfly type Q1390.
- Myrtles_silverspot_butterfly type Q19088.
- Myrtles_silverspot_butterfly type Q729.
- Myrtles_silverspot_butterfly comment "Myrtle’s silverspot, Speyeria zerene myrtleae, is a medium-sized butterfly in the brush foot family (Nymphalidae), an endangered subspecies of Zerene fritillary. It is endemic to California, where it is known from only about four locations just north of the San Francisco Bay Area, including two at Point Reyes National Seashore. Its wingspan is approximately 2.2 inches (56 mm). The upper surfaces of the wings are golden brown with numerous black spots and lines.".
- Myrtles_silverspot_butterfly label "Myrtle's silverspot butterfly".
- Myrtles_silverspot_butterfly sameAs Q6948572.
- Myrtles_silverspot_butterfly sameAs m.02w_kcq.
- Myrtles_silverspot_butterfly sameAs Q6948572.
- Myrtles_silverspot_butterfly wasDerivedFrom Myrtles_silverspot_butterfly?oldid=678574618.
- Myrtles_silverspot_butterfly depiction Myrtlessilverspot.jpg.
- Myrtles_silverspot_butterfly isPrimaryTopicOf Myrtles_silverspot_butterfly.