Butterflies of the
Amazon and Andes
Family - RIODINIDAE
subfamily - RIODININAE
Tribe - MESOSEMIINI
subtribe - MESOSEMIINA
female at rest under leaf, Rio Madre de Dios, Peru ©
There are 1324 known species of Riodinidae in the neotropical
region, 121 of which are placed in the genus
Mesosemia, and a further 8 in the closely related
Butterflies of both genera are commonly known as Eyemarks, due to
the prominent ocelli located in the discal cell of the forewings.
All species are sexually dimorphic - the males of many species
including Semomesia croesus being
metallic blue, marked with fine black lines and a black apex. The
females of croesus and most other
Mesosemia species, are dark brown, marked with prominent
is found throughout the Amazonian region.
This species is found in primary rainforest at altitudes between
To be completed.
Males tend to be seen in two's and
three's along dark forest tracks. They tend to spend a large amount of
time resting with wings half-open or outspread underneath the leaves
of low growing bushes. They are readily disturbed, but even when
alarmed they tend to fly only short distances and immediately resettle
under another nearby leaf.
are seen much more rarely, usually when flitting about just above the
herb layer in search of oviposition sites.