The Baltimore checkerspot (''Euphydryas phaeton'') is a North American

butterfly Butterflies are insects in the macrolepidopteran clade Rhopalocera from the order Lepidoptera, which also includes moths. Adult butterflies have large, often brightly coloured wings, and conspicuous, fluttering flight. The group comprises ...

of the family

Nymphalidae The Nymphalidae are the largest family of butterflies, with more than 6,000 species distributed throughout most of the world. Belonging to the superfamily Papilionoidea, they are usually medium-sized to large butterflies. Most species have a re ...

. It has been the official state insect of the

U.S. State In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sove ...

Maryland Maryland ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; ...

since 1973. The Baltimore checkerspot was named for the first Lord Baltimore due to its similarity of colors in the family crest. Despite the species status as Maryland state insect, the population in Maryland has faced significant decline and is currently listed by the

Maryland Department of Natural Resources The Maryland Department of Natural Resources (DNR) is a government agency in the state of Maryland charged with maintaining natural resources including state parks, public lands, state forests, state waterways, wildlife, and recreation areas. ...

as "rare, threatened, and endangered" animal list.

Life cycle

During its period of growth, the checkerspot butterfly will search for a host plant for nourishment. Its native larval host is the white turtle head ('' Chelone glabra''), but it has also to some extent made use of the introduced lawn weed English plantain (''

Plantago lanceolata ''Plantago lanceolata'' is a species of flowering plant in the plantain family Plantaginaceae. It is known by the common names ribwort plantain, narrowleaf plantain, English plantain, ribleaf, lamb's tongue, and buckhorn. It is