Quercus miyagii

{{Short description|Species of plant in the genus Quercus}}

{{Speciesbox

|image=Quercus miyagii.JPG

|image_caption=

|display_parents = 2

|parent = Quercus sect. Cyclobalanopsis

|genus=Quercus

|species=miyagii

|authority=Koidz.Bot. Mag. (Tokyo) 26: 167 (1912)

|synonyms=

• Cyclobalanopsis miyagii (Koidz.) Kudô & Masam.
• Cyclobalanopsis yayeyamensis (Koidz.) Kudô & Masam.

|synonyms_ref=

}}

Quercus miyagii is a species of oak native to the Ryukyu Islands.{{cite web |url=http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:359861-1 |title=Quercus miyagii Koidz. |author= |date=2017 |website=Plants of the World Online |publisher=Board of Trustees of the Royal Botanic Gardens, Kew |access-date=16 October 2020 }} It is placed in subgenus Cerris, section Cyclobalanopsis.{{Cite web |last1=Denk |first1=Thomas |last2=Grimm |first2=Guido W. |last3=Manos |first3=Paul S. |last4=Deng |first4=Min |last5=Hipp |first5=Andrew L. |date=2017 |title=Appendix 2.1: An updated infrageneric classification of the oaks |website=figshare |doi=10.6084/m9.figshare.5547622.v1 |url=https://figshare.com/articles/dataset/Appendix_2_1_________An_updated_infrageneric_classification_of_the_oaks/5547622/1 |access-date=2023-02-24 |format=xls |name-list-style=amp }}

A tree typically {{Convert|12|m|abbr=off}} tall, its acorns are consumed by the freshwater crabs Geothelphusa grandiovata and Candidiopotamon okinawense, which gather them and store them in their burrows.{{cite journal |last1=Sasaki |first1=Takeshi |last2=Naruse |first2=Tohru |date=December 2014 |title=Acorn–foraging activity and feeding behaviour by two species of freshwater crabs (Brachyura: Potamidae) from Okinawa Island, Ryukyu Islands, Japan |url=https://www.jstage.jst.go.jp/article/crustacea/43/0/43_KJ00009621985/_pdf |journal=Crustacean Research |volume=43 |pages=31–40 |doi=10.18353/crustacea.43.0_31 |access-date=16 October 2020 |doi-access=free }}