New state records for 33 species of round fungus beetles, small carrion beetles and mammal nest beetles (Coleoptera: Leiodidae) in Ohio, USA

New state records for 33 species of Leiodidae (Coleoptera) are reported from Ohio, with the major­ity of records from one locality in the southeastern portion of the state. This doubles the known members of the family in Ohio to 66 species in 20 genera. As part of an ongoing project through the Ohio Coleopterists Society to obtain records for a future checklist of the beetles of Ohio, the Leiodidae (Coleoptera) present an exceptional case. The family Leiodidae is represented by 38 genera and 382 species in North America north of Mexico (Peck and Newton 2017). In their annotated catalog of the Nearctic Leiodidae, Peck and Newton (2017) list 29 species of Leiodidae found to occur in Ohio, with an additional two species from Wheeler (1979) and two species from Karns (2019). Peck and Newton’s (2017) catalog lists the states surrounding Ohio as having significantly higher documented records of Leiodidae (Indiana 39, Kentucky 55, Michigan 54, Pennsylvania 47, and West Virginia 36). The new Ohio state records pre­sented herein bring the Ohio total to 66 species in 20 genera (Table 1), a clearer reflection of the diversity of the Leiodidae known to occur in the state