Which island groups are included in the distribution extending south and west from the Ryukyu nucleus?

Answer

Palau, Guam, and Yap

The distribution map for *Chaetodon daedalma* originates from its core area in the Ryukyu Islands and Japan, extending south and west into Micronesia. The specific island groups explicitly cited as part of this extension include Palau, Guam, and Yap. These locations, along with the Mariana Islands, form a distinct cluster of known occurrences. This pattern suggests a strong historical biogeographical connection or reliance on similar geological substrates present across these island territories.

Which island groups are included in the distribution extending south and west from the Ryukyu nucleus?
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