Oak Timberworm beetle, Arrhenodes minutus, at my light last night (Iowa, USA). Unlike the highly speciose "true" weevils, family Curculionidae (with 2,900+ species in North America alone and 50,000+ worldwide), the straight-snouted weevils (Brentidae, pictured) contain a modest 150 species in the states and 4,000 in total.
Silvanid beetle, family Silvanidae, possibly Telephanus atricapillus (Iowa, USA).
Mating longhorn beetles, Psenocerus supernotatus (Iowa, USA).