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Butterflies of the Amazon and Andes
 
Dyson's Blue Doctor
Rhetus dysonii  SAUNDERS, 1849
Family - RIODINIDAE
subfamily - RIODININAE
Tribe - RIODININI
 
 introduction | habitats | lifecycle | adult behaviour
 

Rhetus dysonii, male, Manu cloudforest, 1500m, Peru
 
Introduction
 
The genus Rhetus is comprised of 3 species, of which periander is the commonest and most widespread. The others are arcius, which is paler, with longer, thinner tails; and dysonii, as illustrated above, in which the outer margin of the forewings are convex, and which has distinct white basal and post-median bands, and white markings on the tail.
Rhetus dysonii occurs in Panama, Colombia, Ecuador, Peru, Brazil and Bolivia.
 
Habitats
 
This species is usually found singly, in association with narrow streams or ditches, often in disturbed areas such as roadsides or forest glades. It occurs at elevations between about 400-1800m.
Rhetus dysonii, male, Mariposa, Satipo, Peru
 
Lifecycle
 
To be completed.
 
Adult behaviour

 

The butterfly is mainly active in the afternoon, and is seen more frequently in cloudy conditions than in sunshine.

In cloudy conditions the males will bask for long periods on damp banks, and are nearly always found in association with small streams or ditches, where they imbibe dissolved minerals from the mud.

 

 

 

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