Adult Butterfly Diagnosis: Large orange and black butterfly with 65-70 mm wingspan. This endangered species lives in oak savannas and pine barrens and is associated with wild lupine (Lupinus perennis, a plant that the caterpillar eats). The coloring and pattern of monarch and viceroy wings look nearly identical. Resembles the Monarch butterfly but smaller, and differs on hindwing: dark blue to black postmedian line and only a single line of black spots on margin (Seen below: (1) Monarch (2) Viceroy). The viceroy butterfly is not an endangered species. Subfamily: Limenitidinae. "If we want to have monarchs migrate through the western U.S., as they have for centuries, sustained work is The Viceroy is a poisonous butterfly, just like the Monarch. The Viceroy butterfly (Limenitis archippus) is nearly identical to the Monarch butterfly.It has orange-brown wings with dark black veins. The Monarch butterfly and the Viceroy butterfly are nearly identical and often mistaken for each other. However, a viceroy has a black line crossing the postmedian hindwing. Monarch, Queen and Soldier are the three closely related butterflies that share its physical characteristics with the viceroy. Like many rare or endangered butterflies, this animal is a subspecies of a kind of butterfly that isn't particularly rare, or has enough other variants as to make it fairly well-known. Then the viceroy butterfly will eat the nectar of the fruit and die. The viceroy butterfly exhibits physical resemblance to three species of genus Danaus. The milkweed makes the monarch butterfly toxic to birds. Prepona praeneste is the nominate, or main species, and buckleyana is the subspecies. The milkweed makes the monarch butterfly toxic to birds. The Viceroy butterfly Listed for protection in New Mexico, the viceroy is a cousin of the monarch and queen butterflies, mimicking the monarch that is poison to birds. The Karner Blue Butterfly (Lycaeides melissa samuelis) is a small, blue butterfly that has a wingspan of about 1 inch (2.5 cm). Comparing wingspans: Viceroy: 2 1/2 - 3 3/8 inches (6.3 - … It is part of the arthropod phylum, and the class insecta.The viceroy is of the order Lepidoptera (which includes butterflies and moths), the family Nymphalidae (brush-footed butterflies), the genus Limentis, and the species archippus. THE VICEROY BUTTERFLY Fun Fact: The viceroy butterfly looks very similar to a monarch butterfly. Experts say the monarch butterfly could very well go extinct in the next 20 years. This helps keeps birds from eating them because monarch butterflies taste bitter and … Viceroy Butterfly Viceroy Butterfly Coloration and Size. Because they are so similar, a predator often mistakes one for the other and avoids both since it assumes they are poisonous.