Spiny Shield Bug
S4, Male, Wings Slightly Open
Spiny Shield Bug
S3, Male, Antenna
Spiny Shield Bug (Neagenor spinosus)Class: Animals (Animalia) - Jointed Legs (Arthropoda) - Insects (Insecta)
Order: True Bugs (Hemiptera)
Family: Stink Bug (Pentatomoidea, Pentatomidae)     iNaturalist Observation
Species: Spiny Shield Bug (Neagenor spinosus)
This Photo:     🔍S5, Female, Wing Venation🔎
Synonym: Neagenor spinosa

Thank you Karen Weaving & Danilo Lüdke for confirming the id of this species for us

General Species Information:
Found on Ellura (in the Murray Mallee, SA) and elsewhere
Adults ~18mm to ~20mm. Males & females are separated by the shape of their rear end. They seem to be the same size.
Neagenors are highlighted by heavy shoulder spines.
Note the unusual black tip to the scutellum here; typically it's pale or the same colour as the body in other Pentatomids. Also note how it's curled up; typically being flat or slightly raised. Danilo noted this as "the reflexed tip of the scutellum".
Note also the unusual polka-dot pattern to the wings.
We can't be sure the nymph is the same species as the adults. However, we have only found one 1 adult Neagenor species here so far, and think it's a reasonable assumption it is the same species.
We have photographed 5 specimens in Jan (M), Feb (M & F), Mar (F) & Oct (Nymph)

Copyright © 2023 Brett & Marie Smith. All Rights Reserved. Photographed 26-Feb-2023
This species is an Australian Native Species, not listed in the SA Murray Mallee Survey of 2010.