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Butterflies of Zihuatanejo

SUPERFAMILY PAPILIONOIDEA

-Animals (Kingdom Animalia)

-Arthropods (Phylum Arthropoda)

-Hexapods (Subphylum Hexapoda)

-Insects (Class Insecta)

-Winged and Once-winged Insects (Subclass Pterygota)

-Butterflies and Moths (Order Lepidoptera)

-Butterflies (Superfamily Papilionoidea)

-Skippers (Family Hesperiidae)

-Grass Skippers (Subfamily Hesperiinae)

-Tribe Hesperiini

-Subtribe Hesperiina

-Genus Polites

-Subgenus Hedone

-Whirlabout (Polites vibex)

-Polites vibex ssp. praeceps


Polites vibex, commonly known as the Whirlabout, is a small grass skipper in the family Hesperiidae. It is named for its rapid, erratic, whirling flight, which makes it a familiar sight in grassy habitats. The Whirlabout is widespread across the southern United States, Mexico, Central America, and parts of South America, inhabiting lawns, fields, roadsides, and other grassy areas. Adults are often seen flying low over grass or perching on blades, frequently making short, darting flights.

Diet

  • Caterpillars feed on grasses (Poaceae).

  • Larvae feed mainly at night and construct shelters among the grass blades.

  • Adults feed on nectar from small flowers, including lantana and other low-growing flowering plants.

Range

  • Polites vibex ranges from the southeastern United States and the Caribbean through Mexico and Central America to South America as far south as Argentina.

  • It occurs in Guerrero and is found in the Zihua area.

Habitat

  • It is primarily a butterfly of open and semi-open habitats.

  • Typical habitats include grasslands, fields, roadsides, forest openings, scrub, gardens, parks, coastal areas and disturbed vegetation.

  • In the Zihua area it is likely to be encountered in sunny grassy areas, particularly where Bermuda grass and other suitable host grasses are abundant.

Description

  • A medium-sized grass skipper with a wingspan of approximately 30–38 mm.

  • Males are predominantly orange above, with a prominent black stigma on the forewing and a narrow dark outer margin.

  • The male hindwing is orange with a darker border.

  • Females are considerably darker, usually dark brown above with several pale spots on the forewing.

  • On the underside, males have a golden-orange hindwing with large dark spots arranged in a distinctive pattern, while females have a more subdued greyish-brown underside.

  • The species receives its common name from its characteristic flight behaviour: adults often make quick, circling or whirling movements when taking off and landing.

Whirlabout

Polites vibex

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