Butterflies of
the Amazon and Andes
Fallax
Sabre-wing
Jemadia fallax
MABILLE,
1878
Family - HESPERIIDAE
subfamily -
PYRRHOPYGINAE
tribe - PYRRHOPYGINI
Jemadia fallax,
Satipo, Peru
Introduction
The
subfamily Pyrrhopyginae comprises 163 known species, most of which are found
only in tropical areas of South America, although a few occur in Mexico, and a
single species
Apyrrothrix arizonae
reaches Arizona.
The Pyrrhopyginae are characterised by having a massive muscular thorax
and a conical abdomen with compressed segments. The wings of most species
are black, often with a metallic blue sheen, and are swept back, half covering
the hindwings when the butterflies settle.
Several genera, including
Jemadia and Elbella
have a pattern of hyaline "windows" on the forewings, and are marked with
stripes and bands of metallic blue and white. Most of the
10 Jemadia and 22 Elbella
species are very similar, but the shape and configuration of the
hyaline windows and blue streaks is slightly different in each species.
Jemadia
fallax
occurs in Colombia, Venezuela, Ecuador, Brazil and Peru.
Habitats
This species is found in primary rainforest at altitudes between
about 200-1000 metres.
Lifecycle
To be completed.
Jemadia fallax,
Satipo, Peru
Adult behaviour
The
butterflies are strongly associated with riparian habitats, and
rarely seen away from rivers or waterfalls.
Males can
be found either singly or aggregating with other
Jemadia
species in groups of 3 or 4, imbibing mineralised moisture on
sandbanks. Once settled and feeding they
are very reluctant to move, and seem oblivious of human presence.
Although they seem very lethargic, they are capable of taking to
the air with incredible speed, flying in short rapid bursts,
circling and weaving around tree tops so quickly that it is
impossible to follow them by eye.
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