These wasps are fairly common around Melbourne, but I've never been able to get a firm identification. This one spent a minute or so subduing the caterpillar (it put up a bit of a fight) and then flew off with the caterpillar.
A small (5mm) weevil which has created a nidus. The relationships here are extraordinary. The female weevil steps out a measure of leaf, cuts it, folds and rolls it smearing a mystery substance as she goes, and injecting spores of a penicillin fungus she had collected in thoracic cavities. The peniciliin protects the larvae as they develop from other infections but don't provide nourishment.
Family Attelabidae; Genus Euops: need to add these
This wasp was about 20 mm long with yellow markings on thorax and head. Scutellum was yellow as were parts of the legs. The abdomen was an amber colour and slightly dorso-ventrally flattened. Wings were clear.
My thanks to Tony D for identifying the genus and for the following information "Beautiful wasp! Features of note for Labium are the large hind claws, ovipositor just barely projecting in females (as seen here), antennae more or less semi-clavate, and head longish below eyes (shown in third pic)."
End of last summer I watched these butterflies fill this silver wattle with eggs. Attendant ants dispersed momentarily when breathed on. :D Ant species should be either Iridomyrmex anceps or Iridomyrmex vincinus ?