Cattlepoisoning Sawfly (Lophyrotoma interrupta)
This team has probably just moulted as they are yellow. They are more often found with a greenish tint.
About 18mm.
These are famous as cow killers... the larvae can cause poisoning if eaten because of their content of lophyrotomin.
Lophyrotoma interrupta is a sawfly which is found on eucalyptus in Australia. It is known to contain a poison which can kill livestock.
Similar species: Wasps, Bees, Sawflies And Ants
By Mark Ridgway
All rights reserved
Uploaded Apr 26, 2016. Captured May 27, 2016 13:20 in 220 The Esplanade, Crib Point VIC 3919, Australia.