Ichneumon Wasp, family Ichneumonidae, and an itty-bitty little Dipteran photobomber in the lower right corner (Iowa, USA).
Ichneumon Wasp, family Ichneumonidae (possibly Enicospilus purgatus), at my porch light (Iowa, USA).
A pair of odorous house ants, Tapinoma sessile, tends to a colony of green aphids on the underside of a leaf (host plant unknown). (Iowa, USA)