Arhesiro is a genus of mite harvestman in the family Sironidae (as of 2023). It is found in North America, only in the US, with one species in California, another in Oregon.
The genus Arhesiro was described by Karaman, 2022, with the type species Siro clousi Giribet & Shear, 2010. Before then, the two included species Arhesiro clousi and Arhesiro sonoma were previously placed in Siro.
These species belong to the genus Arhesiro Karaman, 2022:
The genus is masculine, derived from Siro