Eucalyptus Tip Bug I - Amorbus alternatus

Family Coreidae

This page contains pictures and information about Eucalyptus Tip Bugs that we found in the Brisbane area, Queensland, Australia. The bugs are also known as Gumtree Bugs
Body length 25mm, male
The Eucalyptus Tip Bugs are dark brown in colour with light brown and orange on the legs and antennae. The are the alternated brown and yellow along the edges of the adbomen. Males have shouter hind femora and spiny hind legs. 
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Female and male                                                  Mating pair                                                           
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Nymphs are more colourful, yellow-pink in colour with bright blue patterns. They feed on gum tree, suck sap on the leaves and young shoots. 
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They are are relatively slow moving. Both adults and nymphs will release strong repellent odours when disturbed.

Nymph to Adult

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Nymph, length 20mm                                              Few days later
The colourful bug nymph was found on 23 March 2001 in Wishart bushland. We wanted to find out what bug it was so we brought it home. Few days later, after the last molting, it turned into a Eucalyptus Tip Bug (second picture). 

1. Insects of Australia, CSIRO, Division of Entomology, Melbourne University Press, 2nd Edition 1991, pp 439.
2. Specimen Image Index - Insect Reference Collection Database - ICDB, Western Australian Department of Agriculture, 2006. 

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Last updated: March 26, 2008.