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Small Giant Waterbug

Diplonychus eques

Description:

About 18mm long. This streamlined looking bug was attracted to night lights at the local school.

Habitat:

Under bright lights near midnight and a long way from the nearest flowing water.

Notes:

"The females of the subfamily Belostomatinae lay their eggs upon the back of the males, who cares for them by alternatively wetting them and exposing them to air....... (in Australia) The genus Diplonychus in the subfamily Belostomatinae contains 1 species, Diplonychus eques, that is found in most states except Tasmania and South Australia and 1 species, Diplonychus planus, restricted to the northern gulf region. " - http://anic.ento.csiro.au/insectfamilies...
family: BELOSTOMATIDAE
subfamily: BELOSTOMATINAE
http://bie.ala.org.au/species/urn:lsid:b...

1 Species ID Suggestions

Giant Water Bug
Lethocerus indicus


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10 Comments

Hema  Shah
Hema Shah 9 years ago

Sorry,a little more than half an inch.

MartinL
MartinL 9 years ago

Nice find Mark.
I've seen the large one in Wave Hill (NT).
It came to the light.
They do bite.
http://www.projectnoah.org/spottings/827...

Leuba Ridgway
Leuba Ridgway 9 years ago

Great find around these parts.

Hema  Shah
Hema Shah 9 years ago

18mm is 1.8cm.Less than 1/2 an inch. Cockroaches are bigger.
Nice pictures!!

Mark Ridgway
Mark Ridgway 9 years ago

:) @Sukanya

SukanyaDatta
SukanyaDatta 9 years ago

I like the name Small Giant...wonder what it would take to qualify as a Large Giant!....On second thoughts, an insect that big...no, I'd rather not meet it.

LennyWorthington
LennyWorthington 9 years ago

Sorry Mark. Apologies. I didn't notice the size.
Very similar tho.
http://www.projectnoah.org/spottings/790...
I thought it might be immature

Mark Ridgway
Mark Ridgway 9 years ago

...also Lethocerus indicus is not found in our part of Australia.

Mark Ridgway
Mark Ridgway 9 years ago

Thanks Lenny. I looked at those first and noted a size issue. 18mm didn't seem to make the grade.

LennyWorthington
LennyWorthington 9 years ago

Here in Thailand this Water Beetle is a great delicacy.
Never tried it myself.
http://es.wikipedia.org/wiki/Lethocerus_...

Mark Ridgway
Spotted by
Mark Ridgway

Victoria, Australia

Spotted on Feb 20, 2015
Submitted on Feb 20, 2015

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