Sasakia charonda (Japanese Emperor, Japanischer Kaiser)

Sasakia charonda, also called Japanese Emperor or Japanischer Kaiser is a great butterfly from Palaearctic ecozone (Asia). The first description was in 1863 by Hewitson. With a wingspan of 9.0 – 12.0 cm the Japanese Emperor is a big member of the family NYMPHALIDAE. The butterfly is black with white spots and the underside is greenish. Furthermore the male has a blue iridescence. This blue is caused by an optical phenomenon, named interference.


Photos for easy identification

Photo © by Thomas Neubauer
Photo © by Thomas Neubauer
Photo © by Thomas Neubauer
Photo © by Thomas Neubauer

These are nice photos of Sasakia charonda (Japanese Emperor, Japanischer Kaiser). Sasakia charonda is a member of the family NYMPHALIDAE from Palaearctic (Asia).


Description

The forewings are dark brown or black. At the margin there is a chain of little white spots. In the pinion there are two insulated white sports. In the middle of wing there are two chains of white spots. There is a blue iridescence on a large area around the body.
The underside is light greenish at the pinion and dark brown around the body. There are some white spots in the dark area.

The hind wings are dark brown or black. At the margin there is a chain of little white spots. There are many other white spots on wing. In back there is a red spot.  There is a blue iridescence on a large area around the body.
The underside is light greenish. In back there is a red spot.

The body is white but the upside is black.

Sex differences: The female is brownish and has no blue iridescence.


Macro photos

Photo © by Thomas Neubauer; 07.10.2006, macro photograph of Sasakia charonda (upside)
Photo © by Thomas Neubauer; 07.10.2006, macro photograph of Sasakia charonda (upside)
Photo © by Thomas Neubauer; 07.10.2006, macro photograph of Sasakia charonda (upside)
Photo © by Thomas Neubauer; 07.10.2006, macro photograph of Sasakia charonda (upside)
Photo © by Thomas Neubauer; 07.10.2006, macro photograph of Sasakia charonda (upside)
Photo © by Thomas Neubauer; 07.10.2006, macro photograph of Sasakia charonda (underside)

Here you can see some macro photos of Sasakia charonda.


Distribution

The Japanese Emperor (Sasakia charonda) is a great butterfly of the Palaearctic ecozone (Asia). The distribution extend from the East of China to Korea and Japan.


This world map shows the ecozones in which this butterfly is distributed.

Larval food

Celtis sinensis


General information

The first description of this butterfly was in 1863 by Hewitson. There are three subspecies.

The caterpillar has two warts upside down. The Japanese Emperor is the national butterfly of Japan. The wing beat of Sasakia charonda is very strong and you can hear it up to a distance of some meters.


Photo © by Thomas Neubauer
Photo © by Thomas Neubauer
Photo © by Thomas Neubauer
Photo © by Thomas Neubauer

Here you can see a female of Japanese Emperor (Sasakia charonda).


Protection provisions / Red List

Similar and closely-related species

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Scientific name

Sasakia charonda Hewitson 1863


Synonym

 Japanese Emperor
 Japanischer Kaiser


Classification / Taxonomy / Family tree

To the family tree (Genus: SASAKIA)...


Ecozone

PALAEARCTIC (Asia)

 

To the top

Back to family Nymphalidae from PALAEARCTIC (ASIA)

 

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