AmorbusNymph to Adult Stages Amorbus alternatus Amorbus robustus

Observing the various species of the genera Amorbus on eucalypt trees, over time you will see that as they grow, they go through some visually different stages from nymph to adult.

Amorbus alternatus
Eucalyptus Tip-wilting Bug (Amorbus alternatus), nymph, Araluen, Alice Springs NT
Eucalyptus Tip-wilting Bug (Amorbus alternatus) nymph, Araluen, Alice Springs NT

These nymph (the juvenile) stages will see the Amorbus alternatus undergo stages of moulting the skin, a process referred to as an “instar”. These instars involve some light colouration becoming darker or stronger in colour, some colour and pattern changes, which can make it appear to be different species.

Nymph - Eucalyptus Tip-wilting Bug (Amorbus alternatus), Alice Springs NT
Eucalyptus Tip-wilting Bug (Amorbus alternatus) nymph, Alice Springs NT
Eucalyptus Tip-wilting Bug (Amorbus alternatus), nymph, Araluen, Alice Springs NT
Eucalyptus Tip-wilting Bug (Amorbus alternatus) nymph, Araluen, Alice Springs NT
Eucalyptus Tip-wilting Bug (Amorbus alternatus), nymph, Araluen, Alice Springs NT
Eucalyptus Tip-wilting Bug (Amorbus alternatus), Araluen, Alice Springs NT
Five-legged Amorbus alternatus, Gold Coast QLD © Stefan Jones
Five-legged Amorbus alternatus, Gold Coast QLD © Stefan Jones
Eucalyptus Tip-wilting Bug (Amorbus alternatus), nymph, Alice Springs NT
Eucalyptus Tip-wilting Bug (Amorbus alternatus), nymph, RFDS, Alice Springs NT
Eucalyptus Tip-wilting Bug (Amorbus alternatus), nymph, Alice Springs NT
Eucalyptus Tip-wilting Bug (Amorbus alternatus), nymph, RFDS, Alice Springs NT
Eucalyptus Tip-wilting Bug (Amorbus alternatus), nymph, Alice Springs NT
Eucalyptus Tip-wilting Bug (Amorbus alternatus), nymph, RFDS, Alice Springs NT

Amorbus atomarius
Amorbus atomarius, nymph, Gold Coast QLD © Stefan Jones
Amorbus atomarius, nymph, Gold Coast QLD © Stefan Jones
Amorbus atomarius, nymph, Gold Coast QLD © Stefan Jones
Amorbus atomarius, nymph, Gold Coast QLD © Stefan Jones

Amorbus robustus

Although it was seen on the same plant as Amorbus alternatus, this is Amorbus robustus (Common Gum-Tree Bug).

Amorbus robustus (Common Gum-Tree Bug), Gold Coast QLD © Stefan Jones
Amorbus robustus (Common Gum-Tree Bug), Gold Coast QLD © Stefan Jones
Amorbus robustus (Common Gum-Tree Bug), Gold Coast QLD © Stefan Jones
Amorbus robustus (Common Gum-Tree Bug), Gold Coast QLD © Stefan Jones


AmorbusNymph to Adult Stages Amorbus alternatus Amorbus robustus

Stink Bugs, Shield Bugs and AlliesAmorbus

InsectsBees Beetles Blattodea Butterflies Coleoptera Cicada Crabronidae Diptera Dragonflies & Damselflies Formicidae Hemiptera Heteroptera (True Bugs) Mango Planthopper Moths Orthoptera Orthopteroid Processionary Caterpillar Stink Bugs, Shield Bugs and Allies Syrphidae Wasps Water Scorpion (Laccotrephes tristis) Witchetty Grub