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Yellow dots on white paper, produced by color laser printer (enlarged, dot diameter about 0.1 mm) Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the specific device that was ...
Papilio glaucus, the eastern tiger swallowtail, is a species of butterfly native to eastern North America. It is one of the most familiar butterflies in the eastern United States, [3] ranging north to southern Ontario, Canada, [4] and is common in many different habitats.
Papilio hesperus, the black and yellow swallowtail or Hesperus swallowtail, is a butterfly of the family Papilionidae. It is found in Africa. It is monomorphic, meaning there is only one phenotype in the population of this species. [4] The dorsal and ventral sides of its wings are practically identical due to the wing's translucence. [5]
Its brown-black wings feature a large yellow band and blue and red spotting, making the butterfly easy to spot from far away. [ 6 ] Given the low population and the intense terrain in its forested habitats, few studies of the Jamaican swallowtails have aided to construct a basic biological and ecological understanding of the species.
Fight to mate; this behaviour is common among the blues. Left, upperside of female; right underside of male, from Adalbert Seitz. Luthrodes pandava [2] also called the Plains Cupid [3] [1] or cycad blue, is a species of lycaenid butterfly found in South Asia, [3] Myanmar, United Arab Emirates, Indochina, Peninsular Malaysia, Singapore, Taiwan, Java, Sumatra and the Philippines. [1]
The common blue butterfly or European common blue [3] (Polyommatus icarus) is a butterfly in the family Lycaenidae and subfamily Polyommatinae. The butterfly is found throughout the Palearctic and has been introduced to North America. Butterflies in the Polyommatinae are collectively called blues, from the coloring of the wings.
At the top of the forewings marks a striking black and white zigzag pattern. Underneath there is a cream and black speckled pattern. Additionally, blue eyespots and a soft yellow color marks the wings. [4] [3] The life history for the Natewa swallowtail is currently poorly known. [5] The butterfly has multiple generations year round. [9]
Young caterpillars are black with lighter colored transverse stripes. Older larvae have two color forms. The more common form is green with yellow and white transverse stripes; the rarer form is black and banded with white and orange. In both forms, between the swollen thorax and the abdomen, there is a yellow, black, and bluish-white band.