Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

Eight-spotted Longtail
Polythrix octomaculata (Sepp, [1844])

Family: Hesperiidae
Subfamily: Pyrginae
Identification: Females have long hindwing tails; males have shorter tails and no costal fold. Wings are brown; forewing with only 1 submarginal brown spot near the rear of the wing. Spot near the base of forewing underside is faint or absent; underside hindwing of female often has a smeared white patch.
Wing Span: 1 3/8 - 1 13/16 inches (3.5 - 4.6 cm).
Life History: Not reported. When inactive, adults perch under large leaves.
Flight: Many flights from March-November in Mexico; March and August-October in South Texas.
Caterpillar Hosts: Tree and shrub legumes and Pterocarpus.
Adult Food: Flower nectar.
Habitat: Shady areas and streams in tropical forest or scrub.
Range: Argentina north through tropical America to Mexico and Haiti. Occasionally strays to the lower Rio Grande Valley, Texas.
Conservation: Not necessary for a rare stray.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
Comments: NULL
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