FIG. 225. — The mimicking of the inedible Monarch butterfly by the edible Viceroy. Upper figure is the Monarch (Anosia plexippus); middle figure is the Viceroy (Basilarchia archippus); lowest figure is another member of the same genus (Basilarchia), to show the usual color pattern of the species of the genus.

Title: Animal studies
Year: 1903 (1900s)
Authors: David Starr Jordan, 1851-1931; Vernon L. Kellogg
Book Page: https://archive.org/stream/animalstudies00jord/#page/n377/mode/1up
Source: https://commons.wikimedia.org/wiki/File:Animal_studies_(1903)_(18011661310).jpg

The monarch butterfly or simply monarch (Danaus plexippus) is a milkweed butterfly (subfamily Danainae) in the family Nymphalidae. Other common names depending on region include milkweed, common tiger, wanderer, and black veined brown.

The viceroy butterfly (Limenitis archippus) is a North American butterfly that ranges through most of the contiguous United States as well as parts of Canada and Mexico.