Oarisma garita

(Reakirt, 1866)

Garita Skipperling, Western Skipperling, Garita Skipper

A small grass skipper native to North American prairies and open . are active in early summer with a period from mid-June through mid-July. The has been studied as a comparative model for understanding temperature effects on development in the endangered O. poweshiek.

Oarisma garita by (c) Nick Block, some rights reserved (CC BY), uploaded by Nick Block. Used under a CC-BY license.Oarisma garita by Northern Prairie Wildlife Research Center - USGS. Used under a Public domain license.A manual of North American butterflies (6285864617) by Charles Johnson Maynard . Used under a Public domain license.

Pronunciation

How to pronounce Oarisma garita: /oʊˈɛərɪsmə ɡəˈraɪtə/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Distinguished from similar small skippers by the combination of orange-brown upperside and the distinctive hindwing underside pattern: dark gray with orange inner margins and gray-white . The small wingspan (20–25 mm) and early summer period help separate it from later-flying .

Images

Appearance

Wingspan 20–25 mm. Upperside orange-brown. Forewing underside orange; hindwing underside dark gray with orange inner margins and gray-white .

Habitat

Dry or moist prairies, open woodlands, and limestone outcrops.

Distribution

Southeastern Manitoba to British Columbia, south through the American Midwest to Mexico.

Seasonality

fly from mid-June through mid-July.

Diet

Larvae feed on grasses including Sitanion, Blepharoneuron, Stipa, Poa, and Bouteloua. feed on flower nectar.

Life Cycle

Complete with , larva, pupa, and stages. Larvae overwinter. Development is temperature-dependent; ex-situ studies indicate larvae may complete development in five, six, or seven instars. appears to act as a developmental 'reset' mechanism promoting synchronized adult .

Behavior

Ex-situ studies suggest greater developmental plasticity in response to temperature compared to the endangered O. poweshiek. Larvae reared at constant elevated temperatures (28°C) showed accelerated with most eclosing in the same season as hatching, bypassing .

Ecological Role

Grass-feeding herbivore; nectar feeding may contribute to pollination.

Human Relevance

Used as a research surrogate for the endangered Poweshiek skipperling (O. poweshiek) in conservation studies. Not itself listed as endangered.

Similar Taxa

  • Oarisma poweshiekEndangered with similar and requirements; O. garita has greater developmental variability and longer period, suggesting greater climate .

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Sources and further reading