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.

Related Questions
To which family does Chaetodon daedalma, the Wrought-iron Butterflyfish, belong?What is the documented depth range spanned by the Wrought-iron Butterflyfish?Which specific island group is cited as a core area of endemism for C. daedalma?What is another common name used for Chaetodon daedalma besides Wrought-iron Butterflyfish?Is the Wrought-iron Butterflyfish considered widespread or specialized geographically?What zone category often describes the habitat at the 100 meter depth limit for C. daedalma?Which island groups are included in the distribution extending south and west from the Ryukyu nucleus?Why do localized threats pose a disproportionately high risk to the Wrought-iron Butterflyfish population?What directly translates the limited range and deep habitat into scarcity in the marine aquarium trade?Reports of C. daedalma sightings significantly deeper than 100 meters require what type of evidence for trustworthiness?