Silvanid beetle, family Silvanidae, possibly Telephanus atricapillus (Iowa, USA).
Mating longhorn beetles, Psenocerus supernotatus (Iowa, USA).
Leaf beetle - Chrysomelidae: Galerucinae: tribe Alticini, possibly genus Disonycha (Iowa, USA). Members of this tribe are sometimes referred to as flea beetles thanks to their jumping prowess.
