Speyeria cybele leto

(Behr, 1862)

Great Spangled Fritillary (subspecies)

cybele leto is a of the great spangled fritillary , a large and striking member of the . This subspecies belongs to a renowned for its silvery spots and close ecological association with violets as larval plants. Research on Speyeria cybele has demonstrated that visual perception is the primary sense used for navigation to suitable , with individuals capable of detecting and orienting toward habitat from distances of at least 60 meters. The exhibits pronounced geographic variation in coloration, with western typically browner than their more orange eastern counterparts.

Pronunciation

How to pronounce Speyeria cybele leto: /ˈspeɪəriə ˈsɪbɪli ˈliːtoʊ/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Distribution

Alberta, Canada (confirmed record). The parent cybele ranges across northern states of the United States, extending south to northern Georgia in the east and central California in the west, with rare occurrence in the central United States.

Host Associations

Violets (Viola spp.) - larval Females lay on or near violet clumps; feed on violet leaves after emerging from

Life Cycle

Females in August or September on or near violet plants. hatch and crawl to nearby violets, hiding among fallen leaves to hibernate through winter. In spring, emerge from and feed on fresh violet foliage before pupating. emerge in early summer, with males appearing slightly before females. After mating in June or July, males die while females may survive into October.

Behavior

Strong and fast fliers capable of navigating across open water to locate suitable . Visual perception is the primary sensory modality for habitat and orientation, as demonstrated by experimental manipulation of vision through flash-induced blindness. Flash-blinded individuals show dramatically reduced navigation success even to nearby habitat, indicating heavy reliance on sight rather than olfaction or wind perception for landscape- movement.

Human Relevance

Featured on a 70-cent United States Postal Service stamp issued in 2014, designed for use on irregularly shaped greeting cards. The parent is a common and conspicuous component of meadow and prairie across much of North America.

Similar Taxa

Speyeria atlantisSimilar orange and black coloration; distinguished by geographic range and subtle pattern differences; both were studied together in navigation experiments showing similar visual-dependent abilities
Euptoieta claudia (variegated fritillary)Shares orange and black warning coloration and violet-feeding larval habits; differs in being smaller, migratory in part of range, and having more per year
Speyeria callippeClosely related fritillary in the same with similar and violet association; distinguished by pattern and geographic distribution

More Details

Taxonomic Note

GBIF lists cybele leto as a synonym of Speyeria leto, indicating taxonomic instability or historical revision in this group. The epithet 'leto' was established by Behr in 1862.

Conservation Genetics

A callippe hagemani was named in honor of Charles Hageman for his contributions to California research, highlighting the ongoing discovery of cryptic diversity within this .