Australian Aquatic Biological

Australian aquatic biodiversity research and consultancy

Giant Water Bugs Lethocerus insulanus

Giant Water BugIMGP9387

Giant Water Bugs Lethocerus insulanus
This one is small only 50 mm head to tail

Giant water bugs are amazing predators that grow to the huge size of 70 mm We have been surveying the coastal swamps of Port Macquarie-Hastings LGA and the Coffs Harbour LGA. Both areas have relatively high numbers of these huge bugs lurking in the shallow coastal swamps.

Shallow coastal paperbark and reed swamps in the Lake Innes National Park are prime giant water bug habiutat areas

Shallow coastal paperbark and reed swamps in the Lake Innes National Park are prime giant water bug habitat areas

They are predators that actively hunt or ambush live prey. We have been finding them with huge numbers of Plague Minnows Gambusia holbrooki in the Port Macquarie area and with Cherax cuspidatus at Coffs Harbour and both of these animals are foods for bugs. Some people keep these bugs as aquarium pets and they normally feed them crickets, moths, flies and just about anything they can find and drop into the tank.

This juvenile Giant Water Bug from Coffs Harbour areas is only 30 mm head to tail

This juvenile Giant Water Bug from Coffs Harbour areas is only 30 mm head to tail

The adults have wings and can fly long distances. They can be attracted to lights and tend to turn up around street lights or brightly lit service stations and even peoples homes. Take extreme care when handling these critters, they are predators and will bite causing a painful injury.

Research & Aquaculture Director for Australian Aquatic Biological P/L
Team Leader for The Australian Crayfish Project
Director of Mid West Yabby & Fish Traders and RBM Aquaculture
Secretary of NSW Aquaculture Assoc Inc
Research Associate for Carnegie Museum of Natural History
Honorary Research Fellow, Queensland Museum

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