Phanaeus dionysius
{{short description|Species of beetle}}
{{Speciesbox
| taxon = Phanaeus dionysius
| image = Scarabaeidae (10.3897-zookeys.743.23029) Figure 5.jpg
| authority = Kohlmann, Arriaga-Jiménez, Rös, 2018
}}
Phanaeus dionysius is a species of dung beetle in the family Scarabaeidae. It is found in region of San Pablo Etla of Oaxaca, Mexico.{{cite journal |url=https://zookeys.pensoft.net/articles.php?id=23029 |title=Dung beetle vicariant speciation in the mountains of Oaxaca, Mexico, with a description of a new species of Phanaeus |issue=743 |pages=67–93 |journal=ZooKeys |date=14 March 2018 |doi=10.3897/zookeys.743.23029 |pmid=29670437 |accessdate=3 April 2018|doi-access=free |last1=Kohlmann |first1=B. |last2=Arriaga-Jiménez |first2=A. |last3=Rös |first3=M. |pmc=5904386 }}