Papilio appalachiensis

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Papilio appalachiensis
P app m holotype dorsal.jpg
Male holotype
Status TNC G4.svg
Apparently Secure  (NatureServe) [1]
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Papilionidae
Genus: Papilio
Species:
P. appalachiensis
Binomial name
Papilio appalachiensis
(Pavulaan & D. Wright, 2002)
Synonyms
  • Pterourus appalachiensisPavulaan & Wright, 2002

Papilio appalachiensis, the Appalachian tiger swallowtail, is a species of swallowtail butterfly found in eastern North America, particularly in the Appalachian Mountains. It is a hybrid of another two Papilio species, Papilio canadensis and Papilio glaucus , with which it shares many characteristics. The butterflies are normally yellow and contain black patterns in their wings. Their wingspans range from 86 to 115 mm. The caterpillars range in color from green and yellow to orange and are ornamented with black specks that give them the appearance of a bird dropping, which is useful for camouflage, or a large eye, a form of mimicry that is also efficient for protection. This species is univoltine. Females lay their eggs in May.

Contents

Taxonomy

Papilio appalachiensis is a member of the genus Papilio in the order Lepidoptera. [2] It is closely related to Papilio canadensis and Papilio glaucus . [3]

Distribution

The butterfly is found in the eastern United States, specifically in the Appalachian Mountains, ranging from Pennsylvania to Georgia. [2] It is notably larger than both the eastern tiger swallowtail and the Canadian tiger swallowtail. [2]

Evolution

P. appalachiensis is thought to have evolved as a hybrid species of two other Papilio butterflies: P. canadensis and P. glaucus . [3] Originally, researchers believed that P. canadensis and P. glaucus were distributed in distinct regions separated by a hybrid zone stretching east from Minnesota to southern New England and south along the Appalachian Mountains. [3] In 2005, researchers suggested these two species interacted at some point and produced the new hybrid P. appalachiensis in the hybrid zone. [3]

Although each species of tiger swallowtail butterflies is usually confined to a specific "thermal landscape", based on specific X-linked markers and various behavioral traits, laboratory and observational studies have shown the hybrid Appalachian tiger swallowtail butterflies have emerged. [3] Data collected about oviposition preferences and larval mortality rates further suggest hybridization between P. canadensis and P. glaucus. [4] Due to shifting thermal landscapes, the ranges of both P. glaucus and P. canadensis have moved dramatically enough to overlay, leading to crossbreeding that has resulted in P. appalachiensis. [3]

Although hybrid speciation is often difficult to achieve, given the difficulty of finding a habitat separate from either parental species (competitive exclusion) and remaining genetically distinct from the parental species (reproductive isolation), P. appalachiensis accomplishes this by living in a separate habitat: a higher elevation in the Appalachian Mountains. [5]

Appearance

P. appalachiensis and its hybrid parents
P app f paratype dorsal.jpg
P. appalachiensis

The Appalachian tiger swallowtail has similarities to both parent species; it resembles P. canadensis as it is adapted to a cooler temperature and has only one brood per year (univoltine), but also resembles P. glaucus as it displays sex-limited polymorphism with the dark female morph displaying mimicry. [5] However, research has shown that P. appalachiensis may be more closely related genetically to P. canadensis than to P. glaucus. [5]

Females of P. appalachiensis are generally larger than those of P. glaucus. Their wings are slightly angular and have vertical black stripes that are narrower than those on P. glaucus. [6] The hindwing scallops are also less curved and more angular than those of P. glaucus. [7] Additionally, the spots on their hindwings are also less crescent shaped and rectangular compared to those of P. glaucus. [7] Males' hindwings tend to be more triangular. [7]

The female has two forms: yellow and black. [6] Both the yellow and black forms have a slight blue tint on the topside of the hindwings that is significantly reduced from the stronger blue tint on those of the tiger swallowtails. [6] On the topside of the hindwing, there is a large orange spot. [6] Their wingspan is 86–115 mm (3.4–4.5 in). [6] Initially, no black forms of P. appalachiensis were thought to exist, but researchers found two black females on the summit of Spruce Knob in West Virginia. [8]

Caterpillar

Caterpillar of the closely related species P. glaucus TigerSwallowtailCaterpillar.jpg
Caterpillar of the closely related species P. glaucus

The caterpillars of Papilio species are usually smooth and vary in color from green to yellow orange. In addition, they have black markings to mimic the appearance of bird droppings or the head of another bug with large "eyes". [9] The eyespot consists of areas of yellow ringed with black with a smaller, light purple spot (also ringed in black) inside. [9]

Additionally, a small black spot on top of the "eye" gives it the appearance of a true eye. [9] This form of mimicry provides a natural defense mechanism against potential predators. [9] In addition to their appearance, every caterpillar of the swallowtail family has an osmeterium, a special scent gland behind the head that, when disturbed, is everted from its pouch and releases a foul odor. [9] The gland is orange red, fleshy, forked and generally intimidating to potential predators. [9] The mimicry induced by the eyespots and forked gland give the caterpillar the appearance of a snake, adding to its defense mechanisms against potential predators. [10] The caterpillar lives in a nest that it creates in the trees by folding a leaf over itself and pulling together the two halves with silk. [10] By the time it is ready to undergo metamorphosis, the caterpillar can grow to be up to 5 cm (2 in) long. [10] About a month is needed for the egg to develop into an adult. [10] Fully-grown caterpillars tend to be green. After hatching, the caterpillar usually eats the egg shell. [10]

The caterpillars have been known to eat from the black cherry. [2]

Ecology

Life cycle

The Appalachian tiger swallowtail is univoltine. [4] Female butterflies usually lay their singular brood from May to June. [4] During the mating season, the males fly through the treetops, scouting for females. [4] Females, though, tend to be difficult to find because they prefer to hide in the forest canopy. [4]

After mating, females lay their eggs singularly on host plant leaves. [6] The caterpillars, after hatching, then eat the host plants' leaves and undergo chrysalis throughout the winter. [6] Pupation occurs around late June to July and pupae diapause until spring. Adults hatch in May. [11]

Habitat

Appalachian tiger swallowtail butterflies tend to congregate in the woodlands and woodland openings. [6] They prefer to remain in mid-level to high elevations in the southern Appalachian Mountains, and the species' range stretches from Pennsylvania to Georgia and Alabama. [6] This species is extremely prevalent at higher elevations, but can also be found at lower elevations or valleys within mountainous terrain. [2] The adult butterflies tend to remain in the canopy of the Appalachian hardwood forest and mainly only leave when visiting flowers. [11] Their habitats often parallel those of P. glaucus. [2]

Nectar plants

Adults drink nectar from many plants, including the mountain laurel ( Kalmia latifolia ), the pink azalea ( Rhododendron nudiflorum ), the blackberry ( Rubus ), the cockspur thorn ( Crataegus crus-galli ), the multiflora rose ( Rosa multiflora ), and the bush honeysuckle ( Diervilla ). [6] Near the summit, they also tend to drink from the autumn olive ( Elaeagnus commutata ), but at lower elevation, they drink from the daisy fleabane ( Erigeron ramosus ). [8]

Host plants

The larvae eat the leaves of a wide variety of trees, including cottonwood, tulip tree, lemon and cherry.

Flight patterns

The Appalachian tiger swallowtail shares a delayed flight pattern and many other hybrid-like traits with P. glaucus and P. canadensis despite its genetic isolation. [4] Its flight period is in May. [4] Some individuals take flight during late June, while others fly from May to early June. [12] Populations of this species make annual migrations of over 200 km (120 mi). [11] Papilio appalachiensis usually has a singular flight period from spring to early summer and emerges later than P. glaucus. [2] The Appalachian tiger swallowtail tends to fly directly up the western side of Spruce Knob towards the summit against strong westerly winds. [8] The summit contains substantial vegetation within protected nooks where the adult butterflies rest and obtain nectar from various plants. [8]

Related Research Articles

<i>Papilio glaucus</i> Species of insect

Papilio glaucus, the eastern tiger swallowtail, is a species of butterfly native to eastern North America. It is one of the most familiar butterflies in the eastern United States, ranging north to southern Ontario, Canada, and is common in many different habitats. It flies from spring until fall, during which it produces two to three broods. Adults feed on the nectar of many species of flowers, mostly from those of the families Apocynaceae, Asteraceae, and Fabaceae. P. glaucus has a wingspan measuring 7.9 to 14 cm. The male is yellow with four black "tiger stripes" on each forewing. Females may be either yellow or black, making them dimorphic. The yellow morph is similar to the male, but with a conspicuous band of blue spots along the hindwing, while the dark morph is almost completely black.

<i>Papilio</i> Genus of butterflies

Papilio is a genus in the swallowtail butterfly family, Papilionidae, as well as the only representative of the tribe Papilionini. The word papilio is Latin for butterfly.

<span class="mw-page-title-main">Swallowtail butterfly</span> Butterflies of family Papilionidae

Swallowtail butterflies are large, colorful butterflies in the family Papilionidae, and include over 550 species. Though the majority are tropical, members of the family inhabit every continent except Antarctica. The family includes the largest butterflies in the world, the birdwing butterflies of the genus Ornithoptera.

<i>Papilio polyxenes</i> Species of insect

Papilio polyxenes, the (eastern) black swallowtail, American swallowtail or parsnip swallowtail, is a butterfly found throughout much of North America. An extremely similar-appearing species, Papilio joanae, occurs in the Ozark Mountains region, but it appears to be closely related to Papilio machaon, rather than P. polyxenes. The species is named after the figure in Greek mythology, Polyxena, who was the youngest daughter of King Priam of Troy. Its caterpillar is called the parsley worm because the caterpillar feeds on parsley.

<i>Papilio troilus</i> Species of butterfly

Papilio troilus, the spicebush swallowtail or green-clouded butterfly, is a common black swallowtail butterfly found in North America. It has two subspecies, Papilio troilus troilus and Papilio troilus ilioneus, the latter found mainly in the Florida peninsula. The spicebush swallowtail derives its name from its most common host plant, the spicebush, members of the genus Lindera.

<i>Papilio rutulus</i> Species of butterfly

Papilio rutulus, the western tiger swallowtail, is a swallowtail butterfly belonging to the Papilionidae family. The species was first described by Hippolyte Lucas in 1852.

<i>Papilio zelicaon</i> Species of butterfly

Papilio zelicaon, the anise swallowtail, is a common swallowtail butterfly of western North America. Both the upper and lower sides of its wings are black, but the upper wing has a broad yellow stripe across it, giving the butterfly an overall yellow appearance. There are striking blue spots on the rear edge of the rear wing, and the characteristic tails of the swallowtails. Its wingspan is 52–80 mm. Its body is somewhat shorter than the rather similar western tiger swallowtail, with which its range overlaps; it also lacks the black stripes, converging toward the tail, of the latter. There is a somewhat darker subspecies, P. z. nitra, which is rare throughout the range, though somewhat more often found at lower elevations.

Tiger swallowtail is a common name for several species of butterfly, including:

<i>Papilio multicaudata</i> Species of butterfly

Papilio multicaudata, the two-tailed swallowtail, is a species of the family Papilionidae found in western North America from British Columbia to Central America.

<i>Papilio machaon</i> Species of insect

Papilio machaon, the Old World swallowtail, is a butterfly of the family Papilionidae. The butterfly is also known as the common yellow swallowtail or simply the swallowtail. It is the type species of the genus Papilio. This widespread species is found in much of the Palearctic and in North America.

<i>Papilio polytes</i> Species of butterfly

Papilio polytes, the common Mormon, is a common species of swallowtail butterfly widely distributed across Asia.

<i>Papilio demodocus</i> Species of butterfly

Papilio demodocus, the citrus swallowtail or Christmas butterfly, is a swallowtail butterfly which commonly occurs over the entirety of sub-Saharan Africa, including Madagascar, besides the southern Arabian Peninsula. The caterpillars feed on various native plants of especially the family Rutaceae, but have also taken to the leaves of cultivated citrus trees.

<i>Callosamia promethea</i> Species of moth

Callosamia promethea, commonly known as the promethea silkmoth, is a member of the family Saturniidae, which contains approximately 1,300 species. It is also known as the spicebush silkmoth, which refers to is one of the promethea silkmoth's common host plants, spicebush. C. promethea is classified as a silk moth, which stems from its ability to produce silk, which it does in the formation of its cocoon. C. promethea lives in forests in the eastern U.S. and does not damage the trees on which it lives. The species was first described by Dru Drury in 1773.

<i>Papilio xuthus</i> Species of butterfly

Papilio xuthus, the Asian swallowtail, Chinese yellow swallowtail, Japanese Swallowtail, or Xuthus swallowtail, is a yellow-colored, medium to large sized swallowtail butterfly found in northeast Asia, northern Myanmar, southern China, Taiwan, the Korean Peninsula, Japan, Siberia and the Hawaiian Islands. The butterfly has been observed once in Dunedin, New Zealand in 1996 emerging from a chrysalis in a car yard specializing in Japanese used cars; it is thought the chrysalis arrived through one of the cars. It was also recorded in the state of Arunachal Pradesh, India, in 2014.

<i>Papilio eurymedon</i> Species of butterfly

Papilio eurymedon, the pale swallowtail or pallid swallowtail, is a relatively common swallowtail butterfly found throughout much of the western North America. The species was first described by Hippolyte Lucas in 1852. It is found on the Pacific coast from northern Baja California to southernmost British Columbia, and inland to New Mexico and the Black Hills of South Dakota. It is present from the coast to western Montana, and from Wyoming to northern New Mexico. It is absent from most of Nevada and western Utah. It prefers open woodlands and forest clearings, especially near permanent bodies of water such as ponds, but also urban parks and is occasionally seen in suburban areas. Though not as common as the western tiger swallowtail, the pale swallowtail can be seen in large numbers at puddling parties where up to a dozen or more males may be gathered. There they join other species to sip water from damp soil to obtain nutrients for mating. Their appearance is quite similar to that of the western tiger swallowtail, except they are a white-cream colour or very pale yellow. Some pale swallowtails also have differing amounts of red-orange patches on the top of the wings just above the tail. There is a submarginal band on the bottom of the hindwings. Tiger stripes and borders are thicker than those of western tiger swallowtails. The wingspan is typically 3.5 to 4.5 inches.

<i>Papilio canadensis</i> Species of butterfly

Papilio canadensis, the Canadian tiger swallowtail, is a species of butterfly in the family Papilionidae. It was once classified as a subspecies of Papilio glaucus.

<i>Papilio joanae</i> Species of butterfly

Papilio joanae, the Ozark swallowtail, is a North American butterfly species in the family Papilionidae. It was once considered a synonym of the black swallowtail.

<i>Papilio menatius</i> Species of butterfly

Papilio menatius is a butterfly of the family Papilionidae.

References

  1. "Pterourus appalachiensis Appalachian Tiger Swallowtail". NatureServe Explorer. NatureServe. Jan 4, 2021. Retrieved Nov 30, 2022.
  2. 1 2 3 4 5 6 7 "Species Papilio appalachiensis - Appalachian Tiger Swallowtail - BugGuide.Net". Iowa State University. Retrieved 3 October 2013.
  3. 1 2 3 4 5 6 Scriber, J.M.; G.J. Ording (2005). "Ecological speciation without host plant specialization; possible origins of a recently described cryptic Papilio species". Entomologia Experimentalis et Applicata. 115 (1): 247–263. Bibcode:2005EEApp.115..247S. doi:10.1111/j.1570-7458.2005.00285.x. S2CID   84795117.
  4. 1 2 3 4 5 6 7 Ording, Gabriel J. (2008). An analysis of climate induced hybrid speciation in Tiger Swallowtail butterflies (Papilio). Ann Arbor: ProQuest LLC. ISBN   978-0549617501.
  5. 1 2 3 Zhang, Wei; Krushnamegh Kunte; Marcus R. Kronforst (2013). "Genome-wide characterization of adaptation and speciation in tiger swallowtail butterflies using de novo transcriptome assemblies". Genome Biology and Evolution . 5 (6): 1233–1245. doi:10.1093/gbe/evt090. PMC   3698933 . PMID   23737327.
  6. 1 2 3 4 5 6 7 8 9 10 Belth, Jeffrey E. "Butterflies and Moths of North America: collecting and sharing data about Lepidoptera". USGS, NBII Program, and the USGS NOrthern Prairie Wildlife Research Center. Retrieved 3 October 2013.
  7. 1 2 3 Belth, Jeffrey E. (2013). Butterflies of Indiana: a field guide. Bloomington, IN: Indiana University Press. ISBN   9780253009555.
  8. 1 2 3 4 Pavulaan, Harry; David M. Wright (2004). "Discovery of a black female form of Pterourus appalachiensis (Papilionidae: Papilioninae) and additional observations of the species in West Virginia" (PDF). The Taxonomic Report of the International Lepidoptera Survey. 6 (1): 1–10.
  9. 1 2 3 4 5 6 "IPM1019 Caterpillars in Your Yard and Garden | Page 44 | University of Missouri Extension". Curators of the University of Missouri. Retrieved 3 October 2013.
  10. 1 2 3 4 5 "Tiger Swallowtail Butterfly - EnchantedLearning.com". Enchanted Learning Homepage. Retrieved 2 Oct 2013.
  11. 1 2 3 "Appalachian Tiger Swallowtail-Papilio appalachiensis - Overview - Encyclopedia of Life" . Retrieved 3 October 2013.
  12. J. Mark Scriber, Howard Romack & Mark D. Deering (2009). "Aberrant color patterns in the Papilio and an update on the semi-melanic "fletcheri" variants, including females (Lepidoptera: Papilionidae)" (PDF). Journal of the Lepidopterists' Society . 2 (63): 118–126.