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Limenitis arthemis

(Green Skipper)

Overview

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Interesting Facts

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Common Names

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Common Names in English:

Green Skipper, Red-Spotted Admiral, Red-Spotted Purple, Red-Spotted Purple Astyanax, Red-spotted Purple or White Admiral, Western White Admiral, White Admiral, White Admiral/Western White Admiral/Red

Description

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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 Limenitidinae

The Limenitidinae are members of the Family Nymphalidae. These admirals and relatives are found on most continents. Adults of most genera are characterized by their flap-and-glide flight. Caterpillar and chrysalis structure defines this group.[2]

Physical Description

Species Limenitis arthemis

These two very different forms had once been considered separate species. WHITE ADMIRAL: Upperside is black with broad white median bands on both wings ; hindwing has a marginal row of blue dashes and a submarginal row of red dots. Underside is reddish-brown with white median bands as on the upperside. RED-SPOTTED PURPLE: Upperside is blue to blue-green with much iridescence on the outer part of the hindwing. Underside is dark brown. Forewing has 2 red-orange bars near the base of the leading edge ; hindwing has 3 red-orange spots near the base and a submarginal row of red-orange spots. The two forms hybridize where their ranges overlap, creating various intermediate forms which may be found in or near the overlap zone. (ref. 105980)

Color:

White Admiral: Upperside is black with broad white median bands on both wings ; hindwing has a marginal row of blue dashes and a submarginal row of red dots. Underside is reddish-brown with white median bands as on the upperside.

Red-Spotted Purple: Upperside is blue to blue-green with much iridescence on the outer part of the hindwing. Underside is dark brown. Forewing has 2 red-orange bars near the base of the leading edge ; hindwing has 3 red-orange spots near the base and a submarginal row of red-orange spots.

The two forms hybridize where their ranges overlap, creating various intermediate forms which may be found in or near the overlap zone.

Size/Age/Growth

Wing span : 2 1/4 - 4 inches (5.7 - 10.1 cm).

Habitat

The White Admiral form is usually found in the north in deciduous broad-leaf or mixed evergreen forests dominated by aspen or birch. The Red-Spotted Purple form is usually found further south than the White Admiral, in deciduous or mixed forests, moist uplands , valley bottoms , and coastal plains .

Typically found at an altitude of 0 to 2,145 meters (0 to 7,037 feet).[3]

Ecology: The Red-spotted Purple is a mimic of the poisonous Pipevine Swallowtail (Battus philenor), and hence gains protection from predacious birds. It is thought the red-spotted purple hybridizes with the white admiral butterfly to produce partially banded offspring. Many lepidopterists consider the two to be one species.

Biology

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Diet

Caterpillar hosts: Leaves of many species of trees and shrubs including wild cherry (Prunus), aspen, poplar, cottonwood (Populus), oaks (Quercus), hawthorn (Crataegus), deerberry (Vaccinium stamineum), birch (Betula), willows (Salix), basswood (Tilia), and shadbush (Amelanchier). Adult food: Sap flows , rotting fruit, carrion , dung, and occasionally nectar from small white flowers including spiraea, privet, and viburnum. White Admirals also sip aphid honeydew.

Reproduction

Males perch 3 feet or more above the ground on trees and tall bushes and rarely patrol for females. Eggs are laid singly on tips of host plant leaves; caterpillars eat leaves. Third-stage caterpillars hibernate. Caterpillar is humped, cream-colored, with dark-colored saddle . Two conspicuous brushlike bristles behind the head . Willows, aspens, poplars, cherry, hawthorns, apples and hornbeams are host plants.

Behavior

Flight: Two broods from April-October.

Taxonomy

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Notes

Name Status: Accepted Name .

Similar Species

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Members of the genus Limenitis

ZipcodeZoo has pages for 17 species and subspecies in this genus:

L. archippus (Viceroy) · L. archippus archippus (Viceroy) · L. archippus idaho (Idaho Viceroy) · L. archippus lahontani (Nevada Viceroy) · L. archippus obsoleta (Arizona Viceroy) · L. arthemis (Green Skipper) · L. arthemis arizonensis (Arizona Red-Spotted Purple) · L. arthemis arthemis (White Admiral) · L. arthemis astyanax (Astyanax Red-Spotted Purple) · L. arthemis rubrofasciata (White Admiral) · L. lorquini (Lorquin's Admiral) · L. lorquini pallidafacies (Lorquin's Admiral) · L. populi (Poplar Admiral) · L. weidemeyerii (Weidemeyer's Admiral) · L. weidemeyerii nevadae (Nevada Admiral) · L. weidemeyerii oberfoelli (Weidemeyer's Admiral) · L. weidermeyerii (Weidemeyer's Admiral)

More Info

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Further Reading

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Notes

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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=None&search=Search [back]
  3. Mean = 512.550 meters (1,681.594 feet), Standard Deviation = 522.640 based on 197 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 7/14/2012