Grass skippers

Grass skippers or banded skippers[2] are butterflies of the subfamily Hesperiinae, part of the skipper family, Hesperiidae. The subfamily was established by Pierre André Latreille in 1809.[1]

Grass skippers
both Hesperia comma
Oxfordshire
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Hesperiidae
Subfamily: Hesperiinae
Latreille, 1809
Tribes[1]
and see text

Description and distribution

With over 2,000 described species, this is the largest skipper butterfly subfamily and occurs worldwide except in New Zealand.[3] About 50 percent of grass skippers live in the Neotropics.[4] 137 species are native to North America. Around 38 species are native to Australia.[5] Genera Ochlodes and Hesperia exist exclusively in the Holarctic.[6]

They are usually orange, rust, or brown in colour and have pointed forewings.[2] Many species have dark markings or black stigmas on their forewings.[2] Most members of this subfamily have an oval antenna club with an apiculus on the tip, although Carterocephalus and Piruna do not.[7] The antennae generally has a sharp bend.

Hesperiinae larvae feed on many different types of grasses and sedges and palms, though some species are limited.[7][8]

Adults typically visit flowers and hold their wings together while feeding.[2] Hesperiinae are unique in that they hold their wings partially open while resting, with the forewings and hindwings held at different angles. This is known as the "jet-plane position".[9] Most male grass skippers perch to await females.[7]

Adults are strong fliers; they move quickly and usually in a linear direction. Some of the species, however, do flutter and these species patrol for females rather than perch.[7]

Genera incertae sedis

These[10] grass skipper genera have not yet been assigned to tribes:

Conservation

The following grass skippers are considered at risk.[11]

SpeciesStatusLocation
Silver spotted skipperRare, Protected (UK)Europe
Lulworth skipperProtected (UK)Europe
Orange grass-dart skipperRareAustralia
White-banded grass-dart skipperRareAustralia
Arogos skipperEndangered (USA states IL, NJ, NY), Threatened (USA state MN), Species of Concern (USA state IA)North America
Byssus skipperEndangered (USA Federal listing)North America
Carson wandering skipperEndangered (USA Federal listing)North America
Dukes' skipperThreatened (US state (MI)North America
Dakota skipperThreatened (Canada), Endangered (Canada province MB), Federal Candidate (USA), Vulnerable (ICUN)North America
Mardon skipperEndangered (USA state WA & Federal Candidate USA)North America
Otto skipperEndangered (Canada), Threatened (Canada province MB), Threatened (USA states (IL, MI, MN)North America
Pawnee montane skipperThreatened (USA Federal listing)North America
Poweshiek ling skipperThreatened (Canada), Endangered (USA state WI), Threatened (USA state IA, MI), Species of Concern (USA state MN)North America
Rare skipperEndangered (US state DE)North America
Wandering skipperThreatened (Mexico, USA)North America

References
  1. Brower, Andrew V.Z.; Warren, Andrew. "Hesperiinae Latreille 1809". The Tree of Life Web Project. Retrieved 5 October 2018.
  2. Daniels, Jaret C. (2003). Butterflies of the Carolinas. Cambridge, MN: Adventure Publications, Inc. p. 9. ISBN 1-59193-007-3.
  3. Boggs, Carol L.; Watt, Ward B.; Ehrlich, Paul R., eds. (2003). Butterflies Ecology and Evolution Taking Flight. Chicago and London: The University of Chicago Press. p. 480. ISBN 0-226-06317-8.
  4. Kükenthal, Willy (1999). Schmidt-Rhaesa, Andreas; Kristensen, Niels P. (eds.). VOLUME 1: EVOLUTION, SYSTEMATICS, AND BIOGEOGRAPHY. Berlin and New York: Walter de Gruyter. p. 274. ISBN 9-783-11015-704-8.
  5. Kitching, R.L.; Scheermeyer, E.; Jones, R.E.; Pierce, N.E., eds. (1999). Biology of Australian Butterflies. Collingwood, Victoria, Australia: CSIRO Publishing. p. 71. ISBN 0-6430-5027-2.
  6. Kristensen, Niels P. (1999). Lepidoptera, moths, and butterflies. 4. Berlin: De Gruyter. p. 274. ISBN 9783110157048.
  7. Scott, James A. (1986). The Butterflies of North America A Natural History and Field Guide. Stanford University Press. p. 424-425. ISBN 0-8047-2013-4.
  8. Minno, Marc C. (1994). Immature stages of the skipper butterflies (Lepidoptera: hesperiidae) of the United States : biology, morphology, and descriptions (PhD). University of Florida. p. 18. Retrieved 2018-09-11.
  9. Brock, Jim P.; Kaufman, Kenn (2003). Kaufman Focus Guides Butterflies of North America. New York: Houghton Mifflin Company. p. 302. ISBN 0618254005.
  10. Brower, Andrew V.Z.; Warren, Andrew. "Hesperiinae incertae sedis". The Tree of Life Web Project. Retrieved 5 October 2018.
  11. Beyer, Loni Jean (2009). Oviposition Selection by a Rare Grass Skipper, Polites mardon, in Montane Habitats: Advancing Ecological Understanding for Developing Conservation Strategies (PDF) (PhD). Washington State University Vancouver. pp. 40–41. Retrieved 2018-09-16.
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