Paul J. Spangler

• A revision of the neotropical aquatic beetle genera Disersus, Pseudodisersus, and Potamophilops (Coleoptera: Elmidae)
• A revision of the neotropical aquatic beetle genus Stegoelmis (Coleoptera:Elmidae)
• A revision of the neotropical aquatic beetle genus Stenhelmoides (Coleoptera:Elmidae)
• The aquatic beetle subfamily Larainae (Coleoptera:Elmidae) in Mexico, Central America, and the West Indies