Cydno Longwing Butterfly Heliconius cydno

Cydno Longwing Butterfly underside
Cydno Longwing Butterfly topside
The Cydno Longwing Butterfly, one of the Heliconian family, is native to Central America through to north-western South America.
In the right light, the topside has a beautiful midnight blue iridescence. The topside is very similar to that of the related Sapho Longwing (see link below) but the underside is totally different.
Cydno Longwing Butterfly
Cydno Longwing Butterfly
Cydno Longwing Butterfly
Male and female have a similar appearance but, in addition to the Sapho (Mulleran mimicry is common among the unpalatable Longwing family), there are a number of subspecies which differ to varying degrees and there is also a stable hybrid race (with a Postman species) in Colombia given its own species -- Heliconius heurippa.
Cydno Longwing Butterfly
Cydno Longwing Butterfly underside
In common with other Heliconian butterflies, adults not only drink nectar but also eat pollen which improves their lifespan from days to weeks.
Heliconius cydno alithea Butterfly
Heliconius cydno alithea Butterfly
Cydno alithea sub-species emerged from chrysalis
The longwing butterfly above looks like the Cydno with only a narrow white band on the forewing and a "piano key" edging on the hind wing.
It is the Alithea subspecies Heliconius cydno alithea from Ecuador west of the Andes, the most southerly point of the Cydno's range.
(There are versions of H. sapho and H. eleuchia from western Ecuador which look similar, including the piano key edging -- Mulleran mimicry.)