New species and new record of the genus Caesarodispus (Acari: Heterostigmatina: Microdispidae) phoretic on Temnothorax sp. (Hymenoptera: Formicidae)

A new species, Caesarodispus shandizensis sp. nov. (Acari: Heterostigmatina: Microdispidae) associated with ants of the genus Temnothorax Mayr (Hymenoptera: Formicidae) from northeastern Iran is described. We also found Caesarodispus minutus (Sevastianov, 1981) associated with Temnothorax sp. These findings provide a new association between the mite genus Caesarodispus and ants of the genus Temnothorax. A key to world species of the genus Caesarodispus is provided and the host range of the mite genus is reviewed, showing that all ant hosts of the mite genus belong to the subfamily Myrmicinae (Hymenoptera: Formicidae).