Baclozygum depressum

Baclozygum depressum lives in south eastern Australia and is the only known Tasmanian species. It can damage the adult leaves of Eucalytptus globulus although is not recorded as a forestry pest.  Eggs are laid within feeding scars caused by other chewing insects, such as the weevil Gonipterus, and also cracks in seed capsules and torn stems.  They can also be found in between webbed or rolled leaves.

Male
Mid July 2009
Snug

   

Male on left, female on right
Late July 2012
Knocklofty Reserve, Hobart/nipaluna
The females have juga (forward cheek processes) with lateral margins more straight such that it’s widest around the middle, whereas the males get noticeably wider near the end. There is also some sexual dimorphism in colour.
Photos KE
   

Male lateral view

Female
Late June 2017
Knocklofty Reserve, nipaluna/Hobart
Photos KE

     

Late August 2010
Knocklofty Reserve, Hobart/nipaluna
These were found between two Eucalyptus leaves that had been stuck together.  Adult female with nymph.
Photos KE

Eggs

Nymph
Late August 2013
Knocklofty Reserve, Hobart
The central and right photos show the shelter of joined leaves.  The nymph is the small black dot on the right hand photo.
Photos KE

   

Late July 2019
Knocklofty Reserve, Hobart/nipaluna
Nymph free ranging on a fence
Photos KE
 

Early November 2023
Scamander
Photo KE

IMG 8888

Early June 2015
Knocklofty Reserve, Hobart/nipaluna
Nymph and eggs between webbed-together leaves
Photos KE

Eggs scattered between the leaf overlap.  Other bugs were also sheltering there.
Photos KE
     
Late August 2017
Knocklofty Reserve, Hobart/nipaluna
           

Egg on a female Apiomorpha gall
Early November 2023
Scamander
IMG 8818

Late August 2017
Knocklofty Reserve, Hobart/nipaluna

    

Late September 2020
Knocklofty Reserve, Hobart/nipaluna
IMG 5239

Late August 2022
Knocklofty Reserve, Hobart/nipaluna
IMG 4318  IMG 4321
Late July 2023
Knocklofty Reserve, Hobart/nipaluna
IMG 7398  IMG 7403  IMG 7405  IMG 7400

References

Hill, L. 1988. The identity and biology of Baclozygum depressum Bergoth (Hemiptera: Thaumastocoridae). Journal of the Australian Entomological Society 27: 37-42.