Scarab Beetle larvae generally have distinct ‘C’ shaped pale cream or white bodies, six prominent legs and often have a swollen darker tip to the abdomen. Larvae grow from 15 mm to 60 mm long depending on the species.
The heads of larvae may be black, brown, red or yellow depending on the species. Some ‘cockchafer’ species are named by the colour of larval heads e.g. Redheaded Pasture Cockchafer Adoryphorus couloni, a pest of south-eastern Australia.
Christmas Beetle larvae are ‘C’ shaped, up to about 25 mm long with a brown head, pale cream body and with six prominent legs.
Rhinoceros Beetle larvae are also ‘C’ shaped and grow to about 60 mm long with a dark reddish-brown head, pale cream body and with six prominent legs.
It is extremely difficult to differentiate between most Scarab Beetle larvae. It is best to find the adult beetle for identification.
Adult Scarab Beetles vary considerably depending on the species, but they are often shiny, brown or black, robust beetles. The beetles are usually about 12 to 60 mm long depending on the species.
Adult Redheaded Pasture Cockchafers are shiny black beetles about 15 mm long.
Adult Christmas Beetles are large attractive shiny beetles up to about 25 mm long. Some species are quite spectacular - for example one species is iridescent green, while another is metallic gold.
Adult Rhinoceros Beetles are large black beetles up to about 60 mm in length (male) and 50 mm (female). Males have two large horns on their head which are slightly forked at the end.