Orange-marked Black Leaf Beetle
Antennae
Ellura
Maroon Eboo Beetle
 
    
Orange-marked Black Leaf Beetle (Ditropidus sp)Class: Animals (Animalia) - Jointed Legs (Arthropoda) - Insects (Insecta)
Order: Beetles (Coleoptera)
Family: Leaf Beetle (Chrysomelidae)
Species: Orange-marked Black Leaf Beetle (Ditropidus sp)
This Photo:     Ventral

Thank you Martin Lagerwey for confirming the identification of this species

Thank you Nick Monaghan for confirming the identification of this species

General Species Information:
Found on Ellura (in the Murray Mallee, SA) and elsewhere
~4mm long.
We suspect this is Ditropidus pulchellus. Most images of D. pulchellus have a red pronotum though.
This one also seems to have a slightly different scutellum.
We were wondering if these differences were gender based. Nick suggested it could be a regional variation. Martin agreed and said "I would expect regional or genetic variation. Gender dimorphism is minimal in this species although pronotum colors do vary by gender in Cryptocephalinae including a few Ditropidus and a few Aporocera." Martin also said "There is nothing else close in the Victorian Museum collection."
The only way to be sure this is D. pulchellus or not would be to dissect it.

Copyright © 2020 Brett & Marie Smith. All Rights Reserved. Photographed 31-Oct-2020
This species is an Australian Native Species, not listed in the SA Murray Mallee Survey of 2010.