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Aglais urticae

(Small Tortoiseshell)

Overview

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Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in Dutch:

Kleine Vos

Common Names in English:

Small Tortoiseshell, Mountain Tortoiseshell

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 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 Aglais urticae

Upperside of forewing has alternating 4-sided black and yellow patches along the leading edge ; hindwing has an irregular black patch . (ref. 105966)

Color:

Upperside of forewing has alternating 4-sided black and yellow patches along the leading edge ; hindwing has an irregular black patch .

Size/Age/Growth

Wing span : 1 15/16 - 2 3/8 inches (5 - 6 cm).

Habitat

Gardens and weedy areas; migrates to high mountains.

Typically found at an altitude of 0 to 2,595 meters (0 to 8,514 feet).[3]

Biology

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Diet

Caterpillar hosts: Nettles (Urticaceae family ). Adult food: Flower nectar, including that of butterfly bush (Buddleia).

Reproduction

In the afternoon, males perch on hillsides, banks of gulches, logs , or behind bushes to watch for females. Eggs are laid in large batches on the underside of host plant leaves. Young caterpillars feed together in a web, while older ones feed alone and make shelters of folded leaves tied with silk . Adults hibernate, sometimes in small groups.

Behavior

Flight: One to three broods from March-October.

Taxonomy

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Notes

Name Status: Accepted Name .

Similar Species

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Members of the genus Aglais

ZipcodeZoo has pages for 5 species and subspecies in this genus:

A. ichnusa (Sardinian Small Tortoiseshell) · A. milberti (Milbert's Tortoiseshell) · A. milberti milberti (Milbert's Tortoise Shell) · A. urticae (Small Tortoiseshell) · A. urticae urticae (Mountain Tortoiseshell)

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=Editha&search=Search [back]
  3. Mean = 157.070 meters (515.322 feet), Standard Deviation = 244.580 based on 17,878 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 7/21/2012