Moths of the Amazon and Andes
Royal Myonia
Myonia regis  HERING, 1925
Superfamily - NOCTUOIDEA
subfamily - DIOPTINAE
Myonia regis, Satipo, Peru  Adrian Hoskins
The subfamily Dioptinae comprises of 456 known species arranged into 2 tribes and 43 genera. The moths are almost entirely neotropical in distribution: only one species Phryganidia californica being found north of Mexico. All are day-flying, and most are brightly coloured, typically with aposematic patterns in yellow, orange or white on a black ground colour. They are involved in Batesian mimicry rings with various Ithomiine butterflies, and with moths from the subfamilies Arctiinae ( Erebidae ) and Sterrhinae ( Geometridae ).
Dioptinae, like most other moths have tympanal organs 'ears' at the base of the thorax. These are generally accepted as having evolved to allow them to detect the echo-location calls of predatory bats. These moths however are all day-flying species, and experiments have shown that they are virtually deaf. This implies that their ancestors were nocturnal, and that the ability to hear was lost when they evolved to become day-flying and were no longer exposed to bats.
The genus Myonia ( previously known as Erbessa ) comprises of 59 known species. All are brightly coloured black and yellow day-flying moths.
Myonia regis is found in Ecuador, Peru and Bolivia.
This species inhabits rainforest and cloudforest at elevations between about 200-800m.
To be completed.
Adult behaviour

The adults are active in bright sunshine and can often be found as singletons imbibing mineralised moisture from the edges of puddles or small streams.


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