Speyeria
National Institutes of Health
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Speyeria (Nymphalidae) are a conspicuous component of the North American butterfly fauna. There are approximately 16 species and…
The regal fritillary (“regal”) (Speyeria idalia) is endangered in Wisconsin, USA, and declining and at risk range-wide. During…
North American Speyeria butterflies are a group whose species hypotheses are confounded by shared wing color patterns between…
Egg weights of Speyeria (Nymphalidae) species from California were measured to estimate relative sizes of Þrst-instar larvae…
We analyzed the relative abundance of the large fritillaries Euptoieta claudia (Cramer) (immigrant), Speyeria cybele (Fabricius…