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Butterflies of the Amazon and Andes
Twin-spot Duke
Siseme alectryo  WESTWOOD, 1851
Family - RIODINIDAE
subfamily - RIODININAE
Tribe - RIODININI
Siseme alectryo, Otun-Quimbaya, Colombia  Adrian Hoskins
Introduction
The genus Siseme comprises of 9 known species, all found exclusively in the neotropical region.
The various species differ in colour and pattern. Siseme militaris for example is plain grey, except for a broad orange horizontal streak along the costa of the hindwing. The other species are grey or dark brown in colour, and marked according to species with bands or patches of white or orange. In several species there is a paler outer band, often in the form of rays of grey which run parallel to the veins. All species except militaris have either one or two orange-red spots at the tornus of the hindwings.
Siseme alectryo is found from Colombia to Bolivia.
Siseme alectryo, Satipo, Peru  Adrian Hoskins
Habitats
This species is found in cloudforest habitats at altitudes between about 500-1800 metres. It is most often found in open situations, e.g. along wide trails or forest edges, and often close to streams or other water courses.
Lifecycle
Unknown.
Siseme alectryo, male, Satipo, Peru  Adrian Hoskins
Adult behaviour

Females of all Siseme species are virtually unknown, and probably spend their entire lives high in the forest canopy. Males are quite frequently encountered, usually singly but occasionally in two's and three's, when imbibing mineralised moisture from roadsides, river beaches and the shores of streams. They tend to be seen more often on cloudy or hazy days, when they feed and bask with wings fully outspread. In sunny conditions the wings are usually held erect.

Siseme alectryo, male, Satipo, Peru  Adrian Hoskins

 

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