2 Spotted Blue Hairy Flower Wasp
Female, don't try this at home
Yellow Hairy Flower Wasp
S1, Female: profile
Yellow Hairy Flower Wasp (Radumeris tasmaniensis)Class: Animals (Animalia) - Jointed Legs (Arthropoda) - Insects (Insecta)     iNaturalist Observation
Order: Ant Bee Wasps (Hymenoptera)
Family: Hairy Flower Wasp (Wasp: Scoliidae)
Species: Yellow Hairy Flower Wasp (Radumeris tasmaniensis)
This Photo:     S1, Female: dorsal

Thank you Dr Graham Brown for identifying and Dr Chris Lambkin for helping with the id of this species for us

General Species Information:
Found on Ellura (in the Murray Mallee, SA), the Adelaide Hills and elsewhere
Like other Scoliid wasps, the females have short antennae, where as males have much longer ones.
We were surprised at the size variations of these. On Ellura we have found and measured two females; 18mm (S2) & 25mm (S3, not shown), found in Apr (S1), Nov (S3) & Dec (S2). Graham said "These wasps are scarab larval parasites and the size varies depending on the size of the host larva." In refering to separating out the 2 species, as listed on Atlas, he said "tasmaniensis in the south and radula in the north. The easiest way to distinguish them is in the colour of the setae on the top of the thorax of the female - it is mostly uniformly reddish brown in the latter where as it is yellowish in tasmaniensis. These hairs are often partially abraided in older specimens."
Perhaps the common name refers to the hairs, rather than the body colour which seems to be more orange. There is an image on-line of a pair mating and the male has very yellow stripes without the "tick" marks on the side.

Copyright © 2017-2021 Brett & Marie Smith. All Rights Reserved. Photographed 02-Apr-2017
This species is an Australian Native Species, not listed in the SA Murray Mallee Survey of 2010.