top of page

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)

-Dicot Skippers (Subfamily Eudaminae)

-Tribe Eudamini

-Subtribe Eudamina

-Genus Spicauda

-Plain Longtail (Spicauda simplicius)


The Plain Longtail (Spicauda simplicius, formerly Urbanus simplicius) is a widespread neotropical butterfly in the family Hesperiidae (skippers). It is known for its understated brown coloration and distinctive elongated "tails" on its hindwings. True to its name, it is primarily plain brown on both the upper and lower wing surfaces. Unlike many similar species, it usually lacks any white apical patches or transparent marks on the forewings. They frequent seasonal lowland tropical forests, forest edges, clearings, and disturbed areas like roadsides and gardens.

Diet

  • Caterpillars feed on legumes (Fabaceae).

  • Larvae construct shelters by folding or fastening leaves with silk and feed from within these retreats.

  • Adults feed on flower nectar.

Range

  • Spicauda simplicius has a broad Neotropical range from northern Mexico through Central America and South America to northern Argentina.

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

Habitat

  • It is particularly associated with open and disturbed habitats, including fields, pastures, roadsides, forest clearings and secondary vegetation.

  • It can also occur within closed forest where suitable host plants are present.

  • In the Zihua area, sunny openings, tropical dry-forest edges and areas with leguminous vines provide suitable habitat.

Description

  • A medium-sized long-tailed skipper with a wingspan of approximately 38–50 mm.

  • The wings are predominantly plain brown, with the forewing lacking the conspicuous white or translucent apical spots seen in several related Spicauda.

  • The hindwings have two long, narrow tails, giving the butterfly its characteristic long-tailed appearance.

  • The underside is also predominantly brown, with subtle pale markings and a darker spot near the costa of the hindwing.

  • There is little obvious sexual dimorphism, and males and females are generally similar in appearance.

Plain Longtail

Spicauda simplicius

bottom of page