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Clouded Sulphur (Colias philodice) egg R7747 Stark Co, OH PFN
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Clouded Sulphur (Colias philodice) caterpillar, London, ON PFN
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Clouded Sulphur (Colias philodice) backlit J5776 Scioto, OH PFN
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Clouded Sulphur (Colias philodice) portrait London, ON PFN
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Clouded Sulphur (Colias philodice) portrait Point Farms PP, ON PFN
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Clouded Sulphurs (Colias philodice) puddling Bolivar, OH PFN
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Clouded Sulphurs (Colias philodice) mating R5531 Carroll Co, OH PFN
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Clouded Sulphurs (Colias philodice) mating R5525 Carroll Co, OH PFN
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Orb Weaver Spider with prey Sulphur B3792 Great Valley Grasslands State Park CA PFN
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Orange Sulphur (Colias eurytheme) egg R1054 Point Pelee, ON PFN
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Orange Sulphur (Colias eurytheme) and Halictid Bee on Butterfly Weed R1179 Sand Ridge SP, IL
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Orange Sulphur (Colias eurytheme) and Halictid Bee on Butterfly Weed R1178 Sand Ridge SP, IL PFN
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Orange Sulphur (Colias eurytheme) portrait on Butterfly Weed R1173 Sand Ridge SP, IL PFN
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Orange Sulphur (Colias eurytheme) Honey Bee American Copper on Butterfly Weed R1163 Sand Ridge SP, IL
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Orange Sulphur (Colias eurytheme) female nectaring R0890 Point Pelee, ON PFN
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Orange Sulphur (Colias eurytheme) male nectaring on Butterfly Weed R0927 Wolf Run, OH PFN
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Mead's Sulphur (Colias meadii) Flat-top Mountain, Rocky Mountain NP, CO PFN
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Giant Sulphur egg R9610 CHMB PFN
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Pink-edged Sulphur (Colias interior) B2068 Riding Mountain National Park, Manitoba
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Giant Sulphur (Colias gigantea) R8239 Churchill, MB PFN
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Giant Sulphur (Colias gigantea) butterfly, male R9527 Churchill, MB 04786 PFN
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Giant Sulphur (Colias gigantea) ventral R8223 Churchill, MB PFN
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Giant Sulphur (Colias gigantea) butterfly portrait R0481 Churchill, MB PFN
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Southern Dogface Sulphur egg B0703MS PFN
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Southern Dogface (Zerene cesonia) Sulphur ventral B0726 Mississippi
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Cloudless Sulphur (Phoebis sennae) egg on Cassia flower bud R4406 Rancho Santa Margarita, CA PFNv
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The Golden Egg - Cloudless Sulphur egg, as found on Cassia flower bud R4424 Rancho Santa Margarita, CA PFNv
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Cloudless Sulphur (Phoebis sennae) egg R4065 Rancho Santa Margarita, CA PFN
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Cloudless Sulphur caterpillar on Cassia flower bud Rancho Santa Margarita, CA PFN
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Cloudless Sulphur (Phoebis sennae) larva R4033 Rancho Santa Margarita, CA PFN
