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Papilio polyxenes, the (eastern) black swallowtail, American swallowtail or parsnip swallowtail, [4] is a butterfly found throughout much of North America. An extremely similar-appearing species, Papilio joanae , occurs in the Ozark Mountains region, but it appears to be closely related to Papilio machaon , rather than P. polyxenes .
This polymorphism is seen in Papilio dardanus, the African swallowtail butterfly, whose females have three different morphs for wing color pattern: a black-and-white pattern for Batesian mimicry, a black-and-yellow pattern that resembles the males of the species, and a pattern with orange patches that resembles the elderly males of the species ...
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Media in category "Images of butterflies and moths" This category contains only the following file. Plate II Kallima butterfly from Animal Coloration by Frank Evers Beddard 1892.jpg 1,695 × 2,722; 1.77 MB
Its wings feature an easily recognizable black, orange, and white pattern, with a wingspan of 8.9–10.2 cm (3.5–4.0 in). [10] A Müllerian mimic, the viceroy butterfly, is similar in color and pattern, but is markedly smaller and has an extra black stripe across each hindwing.
Photoacoustic imaging or optoacoustic imaging is a biomedical imaging modality based on the photoacoustic effect.Non-ionizing laser pulses are delivered into biological tissues and part of the energy will be absorbed and converted into heat, leading to transient thermoelastic expansion and thus wideband (i.e. MHz) ultrasonic emission.
Medical ultrasound uses high frequency broadband sound waves in the megahertz range that are reflected by tissue to varying degrees to produce (up to 3D) images. This is commonly associated with imaging the fetus in pregnant women.