-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)

-Spread-wing Skippers (Subfamily Pyrginae)

-Duskywings and Allies (Tribe Erynnini)

-Genus Echelatus

-Common Anastrus (Echelatus sempiternus)

-Common Anastrus (Echelatus sempiternus ssp. sempiternus)

Echelatus sempiternus (formerly placed in Anastrus), commonly known as the Common Anastrus, is a skipper butterfly in the family Hesperiidae. This species is found in Mexico and Central America, where it inhabits tropical forests, edges, and shaded clearings. Adults are often observed perching quietly on leaves or tree trunks, making short, rapid flights before returning to the same spot. The caterpillars feed on leguminous plants (Fabaceae) and construct leaf shelters using silk.