Parasitic wasp (Chalcidoidea: Eupelmidae) from Monteverde, Costa Rica.
A pair of acrobat ants (Crematogaster sp.) feed on extrafloral nectaries in Iowa. Some plants produce these little packets of nutrients as part of their defensive strategy - ants who feed on them will defend the plant for the renewable resource they provide.
Pergid sawfly (Symphyta: Pergidae) from Iowa.
