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    Large Pearl-bordered Fritillary
    The butterflies have a wingspan of 50 to 55 millimeters and, with their size slightly smaller than that of the Silver-washed Fritillary (Argynnis paphia), are among the largest European fritillaries. They have orange or yellow-brown upper wings patterned with black spots and crossbands. The wing ed…The butterflies have a wingspan of 50 to 55 millimeters and, with their size slightly smaller than that of the Silver-washed Fritillary (Argynnis paphia), are among the largest European fritillaries. They have orange or yellow-brown upper wings patterned with black spots and crossbands. The wing edges are broadly dark-bordered. Behind this border are triangular spots that extend into the black edge. The undersides of the hindwings are yellow-brown, with the inner two-thirds, or basal half, slightly greenish and featuring numerous light pearly spots. Along the outer edge of the wings, there are also rows of light spots. The undersides of the forewings are more orange-colored and display black spots. Males have scent scales on three slightly widened longitudinal veins in the rear part of the forewings, which release pheromones to attract females. more Less
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