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Hylephila phyleus

Hylephila phyleus, Photo: U.S. Fish and Wildlife Service

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Cladus: Metapterygota
Infraclassis: Neoptera
Cladus: Eumetabola
Cladus: Endopterygota
Superordo: Panorpida
Cladus: Amphiesmenoptera
Ordo: Lepidoptera
Subordo: Glossata
Cladus: Coelolepida
Cladus: Myoglossata
Cladus: Neolepidoptera
Infraordo: Heteroneura
Cladus: Eulepidoptera
Cladus: Ditrysia
Cladus: Apoditrysia
Cladus: Obtectomera
Superfamilia: Papilionoidea

Familia: Hesperiidae
Subfamilia: Hesperiinae
Tribus: Hesperiini
Subtribus: Hesperiina
Genus: Hylephila
Species: Hylephila phyleus
Subspecies: H. p. anca –H. p. andina –H. p. basistrigata –H. p. monticola –H. p. phyleus –H. p. taxus

Hylephila phyleus Drury, 1773

Type Locality: Antigua + St. Christopher's, Nevis.

Holotype: tbc.

Papilio Pleb. Ur. phyleus Drury, 1773: Index, Pl.xiii.
Papilio phareus Panzer, 1785. Synonymy in Lamas, 2004: 69.
Papilio druryi Megerle, [1803]: txt. Unnecessary replacement name. Suppressed ICZN Op.1710.
Phemiades augias Hubner, 1823: 112.
Hesperia carin Hubner, 1823. Nom Nud. per Lamas, 2004: 69.
Hesperia phylaeus Latreille, [1824]. Mis-spelling.
Pamphila bucephalus Stephens, 1828: 102.
Pamphila philaeus Menetries, 1855: 65. Mis-spelling.
Pamphila hala Butler, 1870: 504. Venezuela. images
Pamphila phylacus (Drury); Gundlach, 1881: 14. Mis-spelling.
Pamphila phylus Weir, 1892. Mis-spelling.
Hylephila phylaeus (Drury); Draudt, [1924]: 928, pI.180c.
Hylephila pallida Hayward, 1944. Argentina. Synonymy in Evans, 1955: 311.
Hylephila phylaeus phylaeus (Drury); Evans, 1955: 311; Lewis, 1974: 246, pI. 83, fig. 18; MacNeill, 1998: 292, Figs. 3a, 4, 9, 14, 21, 22, 31
Hylephila phyleus phyleus (Drury); Bridges, 1994: IX.32; Lamas, 2004: 69; .


Bridges, C.A. 1994. Catalogue of the Family-Group, Genus-Group and Species-Group Names of the Hesperioidea (Lepidoptera) of the World. Bridges, Urbana, Illinois. BHL Reference page.
Butler, A.G. 1870. Descriptions of some new Diurnal Lepidoptera, chiefly Hesperiidae. Transactions of the Entomological Society of London 1870: 485–520. Reference page.
Draudt, M.W.K. 1917–1924. Die amerikanischen Tagfalter. Lycaenidae and Grypocera. In Seitz, Gross-schmetterlinge der Erde 5: 739–999, Pls.1–194. Reference page.
Drury, D. 1770–1782. Illustrations of Natural History London, White. Vol.l (1770): xxviii+130+[2]pp, 50+1 pls, 4 figs; Vol.2 (1773): vii+90pp, 50 pls; Vol.3 (1782): vii+76pp, 50 pls. Vol.1; Vol.2; Vol.3. Reference page.
Evans, W.H. 1951–55. A Catalogue of the American Hesperiidae in the British Museum. Pt.1 (1951): x+92pp, pls. 1–9; Pt.2 (1952): v.+178pp, pls. 10–25; Pt.3 (1953): v+246pp, pls. 26–53; Pt.4 (1955): v+499pp, pls. 54–88. Reference page.
Godman, F.D., 1907. Notes on the American species of Hesperiidae described by Plötz. Ann. Mag. Nat. Hist (7)20: 132-155. Reference page.
Gundlach, J.C. 1881. Contribución á la entomología Cubana 1. Montiel G., Habana: 1–445. Full article (BHL). Reference page.
Hübner, J. 1823. Verzeichniß bekannter Schmettlinge 18–19: 257–304. BHL Reference page.
Lamas, G. 2004. (ed.) Checklist: Part 4A. Hesperioidea - Papilionoidea. In Heppner, J.B. (ed.) Atlas of Neotropical Lepidoptera. Vol.5A, Pt.4A. Assn. for Tropical Lepidoptera/Scientific Publishers, Gainesville. 439pp. Reference page.
Lewis, H.L. 1974. Butterflies of the World, xvi + 312pp., 208 pls. Harrap, London. ISBN 0-245-52097-X Reference page.
MacNeill, C.D. & Herrera J.V., 1998. Studies in the Genus Hylephila Billberg I. Introduction and the Ignorans and Venusta species groups. (Hesperiidae: Hesperiinae). Journal of the Lepidopterists' Society 52(3): 277-317. PDF Reference page.
Megerle von Mühlfeld, J.C. 1803. Catalogus Insectorum Quae Tennae Austriae Die IX. et Sequentibus. Catalogus insectorum 1801-1805. BHL Reference page.
Ménétriés, E., 1855-1863. Catalogue de la Collection Entomologique de l'Academie Imperiale des Sciences de St. Petersbourg. Nouvelle Espèces 1 (1857): 69-97; 2: 99-144; 3 (1863): 145-161; 18 pls. BHL1, BHL2, BHL3, BHL4, plates. Reference page.
Plötz, C. 1882–83. Die Hesperiinen-Gattung Hesperia Aut. und ihre Arten. Entomologische Zeitung 1882: 43: 314–344, 436-456; 1883: 44: 26–64, 44: 195–233. Reference page.


BoA images

The Fiery Skipper (Hylephila phyleus) was originally described by Dru Drury in the year 1773 and is a butterfly of the family Hesperiidae. Reaching approximately 1 inch (2.5 cm) in length, male Fiery Skippers are orange or yellow while the females are dark brown. Small brown spots may be observed on both the hindwing and forewing of both sexes although to a varying degree. Females may be darker brown overall with pale checkered markings on the hindwing.[2][3] Fiery Skipper larvae, or caterpillars, are greenish pink-grey with a black head and constricted neck. These larvae are often considered pests and can feed on Bermudagrass, creeping bentgrass, and St. Augustine grass.[4]

Phylogenetic and genetic analysis of the Fiery Skipper revealed three haplotypes (HphH1, HphH26, and HphH31) to be shared in roughly 64.1% of all sampled individuals. Due to this high percentage, these haplotypes likely serve as central haplotypes from which different variations via mutations occurred.[5] Haplotypes HphH22 and HphH23 were found in addition to HphH1, HphH26, and HphH31 to occur in species across all continents with certain haplotypes being prominent in different regions.[5] More variation in haplotype may be observed in South America, suggesting populations may be larger and contain more diversity when compared to those of North America.[5]


The range of the Fiery Skipper is considered wide. The Fiery Skipper lives in North and South America, from Canada to Argentina. In the northern hemisphere, the butterfly may migrate north in summer months to the northern United States and southern Ontario, Canada.[6] Possible reasons for this include high-density populations resulting in reproductive competition and strategy, resource availability, and courtship customs.[7] In 2012, a female Fiery Skipper was photographed and correctly identified in New Brunswick, Canada, suggesting the species may travel as far north as the Maritime Provinces[8]

Fiery Skippers, along with all other species of skippers and skipperlings, can hold their wings in a "triangle" shape. The forewings are held upright, and the hindwings are folded flat. This position is thought to better absorb the sun's rays. Fiery Skippers have been described as “rapid flyers with darting movements” which often make them difficult to both observe and catch.[9] These skippers are often found in urban settings and are known to hold a unique relationship with turfgrass such as Bermuda Grass (Cynodon dactylon).[10] In Hawaii, studies looking at the diet of Fiery Skipper larvae found individuals to grow most rapidly when fed a diet of “FB-137” Bermuda Grass.[11] Given the wide range of these skippers, it is suggested the species is well adapted and will readily disperse given ample resources.

Mating, female on top

Fiery skipper on lantana

Fiery skipper on bush sunflower

Reproduction and life cycle

When looking for a mate, male skippers will perch on nearby grass or plants and wait for a female to approach the vicinity. Males will often seek out areas with the highest likelihood of finding virgin females which often leads them to patches near or at sites of hatching. Courtship is described as brief and often disrupted by the presence and competition of rival males. Once a successful mating has occurred, female Fiery Skippers will deposit eggs one at a time in different locations. These eggs are typically small and a translucent white in color but turn pale blue in the first few days.[9] Studies looking at the reproductive cycle of the Fiery Skipper reveal a mean developmental time of 23.4 to 23.5 days during which the Fiery Skipper transformed from an egg into an adult at 27.5–29 °C (81.5–84.2 °F).[9] Once hatched, larvae are initially green but later become more dull and grey. Larvae at this stage are most notably characterized by a black head and constricted neck with mature individuals reaching up to 25 mm (1 in) in length.[12][9] The pupal stage for males and females is roughly the same amount of time during which a pupa will change from green to light brown in coloration.[9] Mating will occur shortly following emergence from the pupa with an average life span ranging from 6 to 11 days.[9] The reproductive habits of Fiery Skippers have been extensively studied by Irene Shapiro with experiments conducted at the University of California Davis during the months of July to October 1974. The development of the Fiery Skipper was studied in laboratory cultures and has proven helpful in understanding the life cycle of this species.
Invasiveness and status as pests

The larval stage of the Fiery Skipper is known to damage Turfgrass, something that has become a problem in the states of California and Hawaii.[4] Turfgrass is a term used to refer to grass blades that are tightly associated with one another by roots, leaves, and stems, and grown for a variety of reasons including aesthetics, density, and consistency.[13] Other butterflies of the genus Hesperiidae may be considered as pests to other plant systems such as bananas and palms.[14]

In 1970, Fiery Skippers were first discovered in Hawaii and have since populated all islands but that of Lana.[9] Following its discovery on the island of Oahu, the Fiery Skipper has become known as an invasive species with primary concerns centered around larval consumption of turfgrass.[11][9]

Treatment of turfgrass with the use of insecticides is recommended if the number of Fiery skipper larvae is found to be 15 after surveying a plot.[3] A 1959 article in Southern California Turfgrass Culture identified Fiery Skipper larvae commonly occurring on and causing damage to bentgrass and suggested the use of aldrin, dieldrin, or heptachlor sprays as insecticides.[15] A mixture of either 0.0015% pyrethrins or 0.25% detergent with 4L of water may also be used to survey the number of Fiery Skipper larvae present within a given patch. The technique works best in 1,860 cm2 (288 sq in) circular patches.[16] Surveying should occur within 5 to 10 minutes of application with roughly 90-100% of larval populations present.[16]

"NatureServe Explorer 2.0 Hylephila phyleus Fiery Skipper". Retrieved 3 October 2020.
Brock, J.P. and Kaufman, K. (2003). Kaufman Field Guide to Butterflies of North America. New York, New York: Hillstar Editions L.C. p. 302.
Deputy, J. and Hara, A. 2000. Destructive turf caterpillars in Hawaii. College of Tropical Agriculture and Human Resources IP-5:10-14.
Potter, D.A. and Braman, S.K. 1991. Ecology and management of turfgrass insects. Annual Review of Entomology 36:383-406.
Runquist, E.B., Forister, M.L., and Shapiro, A.M. 2012. Phylogeography at large spatial scales: incongruent patterns of population structure and demography of Pan-American butterflies associated with weedy habitats. Journal of Biogeography 39:382-396.
"Fiery Skipper - Alabama Butterfly Atlas". Archived from the original on 21 July 2021. Retrieved 21 July 2021. "The Fiery Skipper is an inhabitant throughout the southern United States southward through the West Indies, Central America, and Argentina. During the summer months, it may migrate northward to the New England states, southern Ontario, southern Minnesota, and northern California. It is largely absent from the Rocky Mountain region."
Shapiro, I.D. 1977. Interaction of population biology and mating behavior of the fiery skipper, Hylephila phyleus (Hesperiidae). The American Midland Naturalist 98:85-94.
Clements, J.C. 2012. First record of the fiery skipper, Hyphelia phyleus Drury (Lepidoptera: Hesperiidae) from New Brunswick, Canada. Journal of the Acadian Entomological Society 8:59-60.
Tashiro, H. and Mitchell, W.C. 1985. Biology of the fiery skipper, Hylephila phyleus (Lepidoptera: Hesperiidae), a turfgrass pet in Hawaii. Proceedings of the Hawaiian Entomological Society 25:131-138.
Thacker, P.D. 2004. California butterflies: at home with aliens. BioScience 54:182-187.
Murdoch, C.L., Tashiro, H., Tavares, J.W., and Mitchell, W.C. 1990. Economic damage and host preference of Lepidopterous pests of major warm season trufgrasses of Hawaii. Journal of Integrated Pest Management 30:63-70.
Tofangsazi, N., Cherry, R.H., Meagher, R.L., and Arthurs, S.P. 2014. Tropical sod webworm (Lepidoptera: Crambidae): a pest of warm season turfgrass. Journal of Integrated Pest Management 5:c1-c8.
Beard, J.B. 1973. Turfgrass: science and culture. Englewood Cliffs, NJ: Prentice Hall.
Cook, M.J.W. 2015. A critical review of the literature on the pest Erionota spp. (Lepidoptera, Hesperiidae): taxonomy, distribution, food plants, early stages, natural enemies and biological control. CAB Reviews 10:1-30.
Jefferson, R.N., Deal, A.S., and Sher, S.A. 1959. Turfgrass and dichondra pests in southern California. Southern California Turfgrass Culture 8:9-16.
Tashiro, H., Murdoch, C.L., and Mitchell, W.C. 1983. Development of a survey technique for larvae of the grass webworm and other Lepidopterous species in turfgrass. Environmental Entomology 12:1428-1432.

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