font settings and languages

Font Size: Large | Normal | Small
Font Face: Verdana | Geneva | Georgia
Languages:

Euphydryas phaeton

(Baltimore Checkerspot)

Interesting Facts

[ Back to top ]

Common Names

[ Back to top ]

Common Names in English:

Baltimore, Baltimore Checkerspot

Description

[ Back to top ]

Family Nymphalidae

'The Nymphalidae are members of the Superfamily Papilionoidea, the true butterflies. Distributed worldwide, butterflies of this family are especially rich in the tropics. They are highly variable, and there are more species in this family than in any other. Adults vary in size from small to large, and their front legs are reduced, unable to be used for walking. Wing shape is also highly variable: some species have irregular margins (anglewings and commas), and others have long taillike projections (daggerwings). Browns, oranges, yellows, and blacks are frequent colors, while iridescent colors such as purples and blues are rare. Adults of some groups are the longest-lived butterflies, surviving 6-11 months. Adult feeding behavior depends on the species, where some groups primarily seek flower nectar while others only feed on sap flows , rotting fruit, dung, or animal carcasses. Males exhibit perching and patrolling behaviors when seeking mates. Egg-laying varies widely, as some species lay eggs in clustsers, others in columns, and others singly. Caterpillar appearance and behavior vary widely. Brushfoots overwinter as larvae or adults.

'[1]

Subfamily Nymphalinae

Brushfoots are the most prevalent members of the Family Nymphalinae. Distributed worldwide, this is a diverse group that contains several tribes , each with somewhat different structural and biological features. Adults of North American species are predominantly orange, brown, and black. Wing shape and mating systems are variable. Most checkerspots and crescentspots patrol for mates, while the remainder of groups exhibit either perching or perching and patrolling . Migration varies widely; some strong migrants are found in the lady butterflies, tortoiseshells, and anglewings, while other species are local in occurrence. Most species limit their host plants to a few species, but the Painted Lady has one of the widest host palettes of all butterflies. Eggs are laid singly or clustered in groups, and caterpillars be found feeding alone or communally. Brushfoots overwinter as young caterpillars or hibernating adults.[2]

Physical Description

Species Euphydryas phaeton

Geographically variable. Upperside is black with red-orange crescents on outer margins of both wings and rows of creamy white spots inward. (ref. 105941)

Color:

Geographically variable. Upperside is black with red-orange crescents on outer margins of both wings and rows of creamy white spots inward.

Size/Age/Growth

Wing span : 1 3/4 - 2 3/4 inches (4.5 - 7 cm).

Habitat

Wet meadows, bogs , and marshes in the northeast part of the range ; dry open or wooded hillsides in the southwest.

In the southern Appalachians, the species inhabits two very different habitats . From NC northward, it typically occurs in bogs and wet meadows where considerable turtleheads (Chelone) are present. However, in GA it has been reported only in upland forests , presumably near false-foxgloves (Aureolaria). It has been recorded from all three mountain counties in SC, where bogs are very rare, and I suspect they might have been from upland places. Most NC records come from bogs/wet meadows, at least in the northern mountains. However, I saw one in a clearcut on a ridge in June 1994, and in a high elevation meadow in July 1995. (ref. 104673)

Typically found at an altitude of 0 to 2,594 meters (0 to 8,510 feet).[3]

Biology

[ Back to top ]

Diet

Caterpillar hosts: Plants where eggs are laid and that caterpillars eat before hibernating are turtlehead (Chelone glabra), hairy beardtongue (Penstemon hirsutus), English plantain (Plantago lanceolata), and false foxglove (Aureolaria). After overwintering, caterpillars may continue to use these plants, but may also wander and feed on unrelated plants including arrowwood (Viburnum recognitum), common lousewort (Pedicularis canadensis), Japanese honeysuckle (Lonicera japonica), and white ash (Fraxinus americana). Adult food: Nectar from flowers of milkweed, viburnum, and wild rose.

The primary foodplants in NC are turtleheads (Chelone), of which there are four species. Three are restricted to bogs , wet meadows, etc. , but Chelone lyonii is also found in seeps and other damp spots on forested slopes . False-foxgloves (Aureolaria) are usually found on dry to mesic wooded areas and are suspected foodplants in GA and in the Ozarks. Interestingly, the weedy plantains (Plantago spp. ) are foodplants in some northern states. The population near Roan Mountain in Avery County might be using this genus, as butterfliers cannot locate any species of turtleheads or false-foxgloves (whereas plantains are probably present, but easily overlooked along roadsides). Nectar plants are varied, and the adults also feed at carrion , mud , and other places. (ref. 104673)

Reproduction

Males perch near the ground to find females. Eggs are laid in groups of 100-700 under host plant leaves. Newly-hatched caterpillars move to the tip of the plant and feed together in a web which is enlarged downward as the caterpillars consume more of the plant. These caterpillars suffer high mortality from falling off the plant and from parasitism by wasps. Fourth-stage caterpillars hibernate in rolled leaves on the ground.

Behavior

Flight: One brood; from May-June in the south, June-August in the north.

Flight period: A single brood. At lower elevations (at least in the southern counties) the flight begins around mid-May, but in the higher elevations the flight doesn't begin until late June. The flight lasts about a month at any place, with the high elevation sites finishing around mid- to late July. (ref. 104673)

Taxonomy

[ Back to top ]

Notes

Name Status: Accepted Name .

Similar Species

[ Back to top ]

Members of the genus Euphydryas

There are approximately 81 species in this genus:

E. alexandrina · E. anicia (Anicia Checkerspot) · E. anicia capella · E. anicia carmentis · E. anicia eurytion · E. anicia helvia · E. anicia hermosa · E. anicia wheeleri · E. aurinia (Marsh Fritillary) · E. aurinia aurinia · E. borealis · E. chalcedona (Chalcedon Checkerspot) · E. chalcedona anicia (Variable Checkerspot) · E. chalcedona bakeri (Chalcedon Checkerspot) · E. chalcedona chalcedona · E. chalcedona chuskae (Chalcedon Checkerspot) · E. chalcedona cloudcrofti (Chalcedon Checkerspot) · E. chalcedona colon (Chalcedon Checkerspot) · E. chalcedona corralensis (Chalcedon Checkerspot) · E. chalcedona dwinellei · E. chalcedona kingstonensis (Chalcedon Checkerspot) · E. chalcedona macyi (Chalcedon Checkerspot) · E. chalcedona magdalena (Chalcedon Checkerspot) · E. chalcedona morandi (Morand's Checkerspot) · E. chalcedona olancha · E. chalcedona paradoxa (Chalcedon Checkerspot) · E. chalcedona perdiccas (Island Checkerspot) · E. chalcedona quino · E. chalcedona sierra · E. chalcedona chalcedona (Variable Checkerspot) · E. chalcedona trinitina (Chalcedon Checkerspot) · E. colon (Colon Checkerspot) · E. cynthia · E. cynthia cynthia · E. debilis · E. desfontainii · E. editha (Edith's Checkerspot) · E. editha alebarki (Alebark's Checkerspot) · E. editha angusta · E. editha augusta (Augusta Checkerspot) · E. editha aurilacus · E. editha baroni (Baron's Checkerspot) · E. editha bayensis (Bay Checkerspot Butterfly) · E. editha beani · E. editha bingi (Edith's Checkerspot) · E. editha colonia · E. editha editha · E. editha edithana · E. editha ehrlichi (Edith's Checkerspot) · E. editha gunnisonensis · E. editha hutchinsi · E. editha insularis (Island Checkerspot) · E. editha karinae (Edith's Checkerspot) · E. editha koreti (Koret's Checkerspot) · E. editha lawrencei · E. editha lehmani (Lehman Caves Checkerspot) · E. editha monoensis (Mono Lake Checkerspot) · E. editha nubigena · E. editha quino (Quino Checkerspot; Wright's Checkerspot) · E. editha remingtoni · E. editha rubicunda · E. editha tahoensis (Edith's Checkerspot) · E. editha taylori (Taylor's Checkerspot) · E. editha wrighti · E. gillettii (Gillette's Checkerspot) · E. glaciegenita · E. iduna · E. intermedia · E. intermedia wolfensbergeri · E. magnifica · E. maturna · E. ozarkae · E. phaetana · E. phaethusa · E. phaeton (Baltimore Checkerspot) · E. phaetontea · E. phaeton ozarkae (Baltimore Checkerspot) · E. phaeton phaeton (Baltimore Checkerspot) · E. schausi · E. streckeri · E. superba

More Info

[ Back to top ]

Further Reading

[ Back to top ]

Notes

[ Back to top ]

Contributors

Data Sources

Accessed through GBIF Data Portal February 26, 2008:

Identifiers

Footnotes

  1. http://www.butterfliesandmoths.org/taxonomy?f=18&sci=Nymphalidae&com=Brush-footed Butterflies [back]
  2. http://bugguide.net/index.php?q=search&keys=Editha&search=Search [back]
  3. Mean = 180.780 meters (593.110 feet), Standard Deviation = 177.570 based on 260 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 2009-05-14