Hedychrum sp.
A cuckoo wasp drinks nectar from an early-flowering goldenrod. This species is a parasite of philanthine wasps. South Bristol, New York, USA.
Omalus
The small, shiny cuckoo wasps in the genus Omalus are parasites of wasps that attack aphids. Urbana, Illinois, USA.
Loboscelidia
Loboscelidia is an unusual tropical cuckoo wasp (Chrysididae: Loboscelidiinae). Cape Tribulation, Queensland, Australia (thanks to NCSU and Lynn Kimsey for the identification)
Dryinidae
Female gonatopadine dryinid wasps are wingless and strongly resemble ants. They are parasites of leafhoppers and planthoppers. California, USA.
A female dryinid wasp cleans her formidable weaponry. These insects are external parasites of various leafhoppers and planthoppers. Paraná, Brazil.
Dryinid wasp larva on Gyponana leafhopper
Austin, Texas, USA.
Gonatopus sp.
Gonatopus wasps (Dryinidae) are parasites of leafhoppers. Urbana, Illinois, USA
