New records and notes on the distribution of aquatic insects (Coleoptera, Hemiptera) in southeastern Arizona.

Aquatic insects were collected from Arizona during 2022, and museum specimens and observations posted to online platforms were reviewed to support new records. Notes and records are provided for 8 species of aquatic Coleoptera and Hemiptera. Three species are reported for the first time from the United States in Arizona: Hydaticus rimosus (Dytiscidae), Neobidessus youngi (Dytiscidae), and Rhagovelia ignota (Veliidae). Two additional species are new state records for Arizona: Copelatus debilis (Dytiscidae) and Meridiorhantus calidus (Dytiscidae). Distributional notes are provided for Abedus breviceps (Belostomatidae) and Rhagovelia choreutes (Veliidae). A form of Copelatus distinctus (Dytiscidae) with greatly reduced striae is illustrated. [ABSTRACT FROM AUTHOR]