Australia's Largest Insects

Australia's Largest Insect:

Titan stick insect (Acrophylla titan)

Ctenamorpha species of stick insect found in the wet tropics. An overall body length measuring up to 50 cms.

Photo: © Peter Chew
Titan Stick Insect Acrophylla titan
Brisbane Insects and Spiders

Australia's Largest Butterfly:

Cairns Birdwing
(Ornithoptera euphorion)

A wingspan of up to 18cms.

Photo: ©
Cairns Birdwing

Largest spider in Australia:

Whistling Spiders or Bird-eating Spiders (Selenocosmia crassipes)

Up to 6cm in body length and a total length of 16cm (amonline, 2006).

Photo: © Steve Nunn.
Bird eating spider

Australia's Heaviest Stick Insect:

Goliath stick insect (Eurycnema goliath)

Smaller than the titan (stick insect), but weighing up to 30 grams.

Photo: ©
Goliath Stick Insect

Australia's Largest Cicada:

Double Drummer (Thopha saccata)

The largest cicada in Australia with a wingspan up to 13cm. It is also the loudest insect in the world!

Photo: ©
Double Drummer Cicada

Australia's Largest Ant:

Bulldog ant (Myrmecia brevinoda)

The largest ant (and probably the largest ant in the world) reaching 36mm in length.

Photo: Creative Commons ShareAlike 2.5
Bulldog ant

Australia's Largest Sucking Bug:

Giant water bug (Lethocerus insulanus)

Growing up to 7.5cm in length. This bug can even feed on small fish.


Australia's Largest Bee:

Carpenter bee (Xylocopa aruana)

Wingspan up to 5cm.

Photo: © Peter Chew
Carpenter bee Xylocopa aruana
Brisbane Insects and Spiders

Australia's Largest moth:

Hercules moth (Coscinocera hercules)

A wingspan up to 27cm. The female has the largest wing area of any moth in the world (AusGeo, 2006).


Heaviest moth:

Giant wood moth (Endoxyla cinerea)

Weighing up to 26 grams makes the Giant wood moth the heaviest moth in the World.

Photo: Unrestricted use.
Giant Wood Moth

Largest cricket:

King Cricket (Anostostoma australasiae)

Growing to 7cm in length (AusGeo, 2006).


Largest katydid:

Shield-backed katydid (Siliquofera sp.)

Growing to 13cm, the largest in Australia and one of the largest in the world.

Photo: © Barbara Strnadova
Shield Backed Katydid Siliquofera species
God of Insects

Largest fly:

Robber fly (Phellus olgae)

A wingspan of up to 8cm.

Photo: © Peter Chew
Giant Robber Fly
Brisbane Insects and Spiders

Largest cockroach:

Giant burrowing cockroach (Macropanesthia rhinoceros)

Weighing up to 30 grams. It is the world's heaviest cockroach.


Largest earwig:

Colossus earwig (Titanolabis colossea)

Reaching up to 6cm in length, and one of the world's heaviest earwigs.


Australia's Largest dragonfly:

Giant Petaltail (Petalura ingentissima)

A wingspan up to 15cm.

Photo: © Philip Bowles
Petalura ingentissima - Giant Dragonfly

Largest weevil:

Giant pine weevil (Eurhamphus fasciculatus)

Growing to 6cm is Australia's largest weevil.


Largest longicorn:

Wallace's longicorn (Batocera wallacei)

Reaches a length up to 8.5cm, with antenna that can span an amazing 40cm. This is Australia's largest beetle.


Largest lacewing:

Antlion lacewing (Heoclisis fulva)

A wingspan up to 15cm.

Photo: © Bill Horn
Antlion Lacewing

Largest grasshopper:

Giant grasshopper (Valanga irregularis)

Photo: ©

Giant grasshopper valanga irregularis

Largest wasp:

Spider Wasp (Hemipepis australasiae)

With a wingspan up to 6.8cm.



Rarest insect in Australia (and the World): Lord Howe Island Stick Insect (Dryococelus australis) (ABC, 2002).  

Largest insect nest: Up to 7 metres in height built by termites (EBO, 2007).  




"Australia: Insects". (2007). In Britannica Student Encyclopedia. Retrieved January 18, 2007, from Encyclopædia Britannica Online: Monteith, Geoff. Sep-2006. Giant Insects. Australian Geographic. No. 83. pp54-61.