Lycaena heteronea

Last updated

Blue copper
Lycaena heteronea.jpeg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Lycaenidae
Genus: Lycaena
Species:
L. heteronea
Binomial name
Lycaena heteronea
Boisduval, 1852 [1]
Synonyms
  • Chalceria cupreusDyar, 1903
  • Lycaena cupreus
  • Lycaena coloradensisGunder, 1925
  • Lycaena gravenotataKlots, 1930

The blue copper, also known as Lycaena heteronea, is an American butterfly that belongs to the gossamer-winged family. The butterfly is named so because of the bright blue hue of the upper side of the males' wings. Females are brown on their upper side. Both sexes are white with black spots on the underside of the wings. Blue coppers are seen on the west coast of the United States and the southwest region of Canada, particularly British Columbia and Alberta. The males are often confused with Boisduval’s blue , [2] another species of butterfly. Blue coppers prefer to live in areas where species of Eriogonum are found. Blue copper larvae sometimes form mutualistic associations with Formica francoeuri, an ant species.

Contents

Description

The blue copper is part of the family Lycaenidae and the subfamily Lycaeninae. [3] The upper wing surface of the males is sky blue with dark veins. On females, the upper wing has more of a copper color with black dots. The wings are outlined in white. Both the male and female undersides are white or off-white, with brown-black dots on the forewing. Blue coppers have a wingspan of 29 to 35 mm. Blue coppers are in flight season from April to August, but they vary in different parts of North America. In British Columbia, adults take flight from April to July and in Alberta July to August. Males are in search for food, whereas females are looking for host plants, which suggests that males will inadvertently be around the offspring.

Geographic range

Th blue copper is found in western North America. In Canada, it is found specifically in southern British Columbia and Alberta. In the United States, it has been seen in Washington and California, and as far east as Colorado and New Mexico. The blue copper's preference for buckwheat affects the species' distribution.

Habitat

The blue copper is known to stay in high elevations (1208 to 1651 meters), but in central California the species stays in low elevations (917 to 1452 meters). The butterfly can be seen in brushy areas, mountain meadows, open forests, and sagebrush. Although the presence of Eriogonum attracts blue coppers, the quality of the plant determines whether the butterfly settles in that place.

Californian populations

In California, the blue copper has a restricted distribution in flat areas of Kern and Los Angeles counties and prefer canyon areas near Lebec and O’Neil Canyon. Blue coppers are also prevalent where there are oak (Quercus lobata) trees. At Frazier Park, they prefer the higher elevations where Eriogonum fasciculatum is present. Colonies in this park and canyon areas are next to or close to dry washes.

Home range and territoriality

Lycaena heteronea females focus on finding suitable host plants for laying eggs and are usually found in the immediate vicinity of plants that will provide food for their larvae. . The males patrol between flower heads of Eriogonum food plants and perch on them. The males are extremely territorial with conspecific males to increase their chance of copulating with females. The males have a visual sensor that turns on when conspecific males are around. They ignore other butterfly species that may be present, even those that look extremely similar to male blue coppers, probably because the males’ main objective is to mate with females and other species do not much hinder that.

Food resources

Caterpillars

The caterpillars do not have a wide selection of plants that they can feed on, primarily three buckwheat (Eriogonum) species. When caterpillars first hatch they eat from the underside of the plant. As the caterpillar grows older, it eats the whole leaf.

Adults

Adults have a wide range of plants that they can feed on, including buckwheat, green rabbitbrush, Chrysothamnus viscidiflorus, asters, yarran, gaillardia, fiddleneck, wallflower, and milkweed. This diverse diet enables the males to actively search for and defend their territory.

Life history

Egg

The females lay their eggs one at a time on bracts, modified leaves, or underneath the host plant. Blue coppers are single brooded and females can lay dozens of eggs in a single sitting. The females look for plants of the best quality, usually buckwheat, because this affects their offspring's survival. [4] The eggs, which are round and appear flattened, begin hatching the following spring.

Caterpillar

After hatching, the caterpillar starts eating the underside of the buckwheat leaf. As the caterpillar grows older, it eats all parts of the leaf. Blue copper larvae are shaped like sowbugs or woodlouses. Their color ranges from dull blue to green, which helps the caterpillar to blend in with its surroundings and increase its chance of survival. Depending on their location, some larvae have either a light yellow or white lateral line. Their heads are a brownish color. The caterpillar goes through four instars before pupating.

Pupa

The pupa is green with different shades of green on the outside. [5] On the dorsal side of the pupa is a green line with lateral markings of green. This green coloration allows the pupa to blend in with its surrounding and increase its chances of survival.

Adult

After emerging from the chrysalis, females begin their search for a high quality host plant for larvae. Males begin their search for females to mate with.

Migration

Blue coppers are not known to migrate [ citation needed ]. However, they can fly as far as one kilometer in distance [ citation needed ].

Enemies

The blue copper has no known enemies. However, the species is decreasing in certain parts of California because of the increase in fires that burn down the trees in the open forest where these butterflies reside.

Mating

As the females come out of their pupas they release a pheromone that attracts the males to where they are. The males show off their wing colors because the female will prefer the male with the best wing coloration. To increase their mating success, the males try to be the first male that the females sees.

Mutualism

Some larvae in California have been reported to be facultatively myrmecophilous because they have been observed in association with Formica francoeuri Bolton, an ant species formerly known as F. pilicornis Emery. This means that the Lycaena heteronea larvae are benefitting from the presence of the ants.

Conservation

The Nature Conservancy Global Rank of Lycaena heteronea is G5. [3] This ranking indicates that the species is abundant and secure from a conservation standpoint but it may be rare in certain parts of its range. In southern California, its rank is T2, which means that its scarcity there makes it vulnerable to extirpation.

Related Research Articles

<i>Pieris rapae</i> Species of butterfly

Pieris rapae is a small- to medium-sized butterfly species of the whites-and-yellows family Pieridae. It is known in Europe as the small white, in North America as the cabbage white or cabbage butterfly, on several continents as the small cabbage white, and in New Zealand as the white butterfly. The butterfly is recognizable by its white color with small black dots on its wings, and it can be distinguished from P. brassicae by its larger size and the black band at the tip of its forewings.

<span class="mw-page-title-main">Common blue</span> Species of butterfly

The common blue butterfly or European common blue is a butterfly in the family Lycaenidae and subfamily Polyommatinae. The butterfly is found throughout the Palearctic and has been introduced to North America. Butterflies in the Polyommatinae are collectively called blues, from the coloring of the wings. Common blue males usually have wings that are blue above with a black-brown border and a white fringe. The females are usually brown above with a blue dusting and orange spots.

<i>Manduca sexta</i> Species of moth

Manduca sexta is a moth of the family Sphingidae present through much of the Americas. The species was first described by Carl Linnaeus in his 1763 Centuria Insectorum.

<i>Eriogonum</i> Genus of North American wild buckwheats

Eriogonum is a genus of flowering plants in the family Polygonaceae. The genus is found in North America and is known as wild buckwheat. This is a highly species-rich genus, and indications are that active speciation is continuing. It includes some common wildflowers such as the California buckwheat.

<span class="mw-page-title-main">Lycaenidae</span> Family of butterflies

Lycaenidae is the second-largest family of butterflies, with over 6,000 species worldwide, whose members are also called gossamer-winged butterflies. They constitute about 30% of the known butterfly species.

<i>Lycaena phlaeas</i> Species of butterfly

Lycaena phlaeas, the small copper, American copper, or common copper, is a butterfly of the Lycaenids or gossamer-winged butterfly family. According to Guppy and Shepard (2001), its specific name phlaeas is said to be derived either from the Greek φλέγω (phlégo), "to burn up", or from the Latin floreo, "to flourish".

<span class="mw-page-title-main">Large copper</span> Species of butterfly

The large copper is a butterfly of the family Lycaenidae. L. dispar has been commonly arranged into three subspecies: L. dispar dispar, (single-brooded) which was commonly found in England, but is now extinct, L. d. batavus, (single-brooded) can be found in the Netherlands and has been reintroduced into the United Kingdom, and lastly, L. d. rutilus, (double-brooded) which is widespread across central and southern Europe. The latter has been declining in many European countries, due to habitat loss. Currently L. dispar is in severe decline in northwest Europe, but expanding in central and northern Europe.

<span class="mw-page-title-main">Silver-studded blue</span> Species of butterfly

The silver-studded blue is a butterfly in the family Lycaenidae. It has bright blue wings rimmed in black with white edges and silver spots on its hindwings, lending it the name of the silver-studded blue. P. argus can be found across Europe and east across the Palearctic, but it is most often studied in the United Kingdom where the species has experienced a severe decline in population due to habitat loss and fragmentation.

<span class="mw-page-title-main">Queen (butterfly)</span> Species of butterfly

The queen butterfly is a North and South American butterfly in the family Nymphalidae with a wingspan of 80–85 mm. It is orange or brown with black wing borders and small white forewing spots on its dorsal wing surface, and reddish ventral wing surface fairly similar to the dorsal surface. The ventral hindwings have black veins and small white spots in a black border. The male has a black androconial scent patch on its dorsal hindwings. It can be found in meadows, fields, marshes, deserts, and at the edges of forests.

<span class="mw-page-title-main">Scarce copper</span> Species of butterfly

The scarce copper is a butterfly of the family Lycaenidae.

<span class="mw-page-title-main">Smith's blue butterfly</span> Subspecies of butterfly

Smith's blue butterfly, Euphilotes enoptes smithi, is a subspecies of butterfly in the family Lycaenidae. This federally listed endangered subspecies of Euphilotes enoptes occurs in fragmented populations along the Central Coast of California, primarily associated with sand dune habitat in one case with a dune-based Maritime Coast Range Ponderosa Pine forest in the Carbonera Creek watershed in Santa Cruz County. The range of E. e. smithi is from Monterey Bay south to Punta Gorda.

<span class="mw-page-title-main">Purple-edged copper</span> Species of butterfly

The purple-edged copper is a butterfly of the family Lycaenidae.

<i>Lycaena tityrus</i> Species of butterfly

Lycaena tityrus, the sooty copper, is a butterfly of the family Lycaenidae. It is found in Europe.

<i>Lycaena dorcas</i> Species of butterfly

Lycaena dorcas is a species of butterfly in the family Lycaenidae, the gossamer-winged butterflies. Its common names include dorcas copper and cinquefoil copper. The species was first described by William Kirby in 1837. It is native to North America. The species L. dospassosi was once included in L. dorcas.

<i>Lycaena epixanthe</i> Species of butterfly

Lycaena epixanthe, also known as the bog copper or cranberry-bog copper, is a North American species of butterfly in the family Lycaenidae. Adults like to sip drops of dew clinging to leaves and almost exclusively nectar on their host plant, cranberries. Because of this, bog coppers will spend their entire lives within the area of a single acid bog. Even though their flight is weak and close to the ground, bog coppers are hard to catch because of the habitat in which they live. Also, 85% of the bog coppers life span is spent in the egg. It is listed as a species of special concern in the US state of Connecticut.

<i>Lycaena feredayi</i> Species of butterfly

Lycaena feredayi, the glade copper, is a butterfly of the family Lycaenidae. It is endemic to New Zealand.

<i>Callophrys sheridanii</i> Species of butterfly

Callophrys sheridanii, the Sheridan's hairstreak and Sheridan's green hairstreak, is a butterfly in the family Lycaenidae. It is found in North America along the south coast of British Columbia and parts of Nevada, Arizona, Saskatchewan, North Dakota, and New Mexico. In 2009, this species was adopted as the U.S. state butterfly for Wyoming.

<i>Lycaena arota</i> Species of butterfly

Lycaena arota, the tailed copper, is a butterfly of the family Lycaenidae. It is found in North America from New Mexico north and west to Oregon, south to southern California and Baja California, Mexico.

<i>Lycaena rubidus</i> Species of butterfly

Lycaena rubidus, the ruddy copper, is a butterfly of the family Lycaenidae. It is found in the western mountains of North America. Adults lay their eggs on plants of the genus Rumex, which later become the larval food plants. This butterfly gets its name from the brightly colored wings of the males, which are important in sexual selection. Its larvae exhibit mutualism with red ants, and are often raised in ant nests until they reach adulthood. Adults are on wing from mid-July to early August.

<i>Lycaena boldenarum</i> Species of butterfly

Lycaena boldenarum, the boulder copper, is a species of butterfly which is endemic to New Zealand, it is found on both North Island and South Island in a wide variety of open habitats including grassland, shingle and sand dunes. They are normally only active in bright sunny conditions and their flight is usually low to the ground. The boldenarum part of the species name given by the Scottish entomologist Adam White in honour of his first wife, Helen and her sister Frances, whose maiden name was Bolden. It shares the Maori name pepe para riki with two congeners the common copper and the glade copper.

References

  1. Lycaena at funet
  2. Article in Canadian Biodiversity Information Facilitity
  3. 1 2 Article in Butterflies and moth of North America
  4. Pohl, N.B (2011). "Butterflies show flower colour preferences but not constancy in foraging at four plant species". Ecological Entomology. 36 (3): 290–300. Bibcode:2011EcoEn..36..290P. doi:10.1111/j.1365-2311.2011.01271.x. S2CID   84676752.
  5. Article in E-FAUNA BC: ELECTRONIC ATLAS OF THE WILDLIFE OF BRITISH COLUMBIA

Further reading