Butterflies of the
Amazon and Andes
Family - HESPERIIDAE
subfamily - PYRGINAE
Tribe - PYRGINI
Anisochoria pedaliodina pedaliodina, Satipo, Peru
© Adrian Hoskins
Pyrginae, popularly known as Flats or Spreadwings, are a
cosmopolitan subfamily distributed across temperate and tropical
habitats throughout the world. In the Americas there are 990
species, of which about 580 are assigned to the tribe Pyrgini.
Butterflies in the genus
Anisochoria are noted for their exceptionally long palpi.
There are 10 known species, of which 8 occur in the eastern Andes,
with 2 species reaching into the southern USA. All are marked with
hyaline dashes and dots on the outer half of the forewings. Freshly
emerged adults are black, but this soon fades to a dark earthy brown
is quite variable in appearance. The hyaline markings on the
forewings are extensive and prominent in the Central American
subspecies polysticta, while in some
specimens of the Argentinean subspecies
extincta they are virtually absent.
This species is
distributed from Costa Rica to Argentina. The illustrated subspecies
pedaliodina is found in the eastern
Andes, from Colombia to Bolivia, and in south-west Brazil.
This is a mid-altitude species, found between about 400-2000m above
The larvae of
Anisochoria species are typically
translucent orangey-green in colour, with a narrow neck and a dark
reddish head. They feed mainly on Triumfetta
The chrysalis is pale orange, with dark reddish
eye-capsules, and is covered in a white waxy powder. It is formed
among leaves of the foodplants.
Males are usually seen in two's and
three's, basking on low foliage in the vicinity of streams or small
rivers. In hot conditions they usually hold the wings erect or half
Anisochoria pedaliodina pedaliodina, Mariposas, Satipo, Peru
© Adrian Hoskins