Outback caterpillar (Itchy Grub) train

Submitted: Thursday, Aug 20, 2009 at 22:25
ThreadID: 71662 Views:8995 Replies:12 FollowUps:6
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Quite a few people have commented on and asked questions about these seasonal phenomena in the paast and we were lucky enough to stumble across another one on this years trip. It was about 4 metres long and comprised that many grubs that they wore a trail in the dirt and sand as they passed. Where they were heading is anybodies guess. This video was shot on our way north along the WA/NT border past Lake McKay.




It does work despite the colourful screen. Just press Play.



Cheers Mick
''We knew from the experience of well-known travelers that the
trip would doubtless be attended with much hardship.''
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Reply By: Member - extfilm (NSW) - Thursday, Aug 20, 2009 at 22:32

Thursday, Aug 20, 2009 at 22:32
Well done mate,
I like the footage on the second one........
Peter
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Follow Up By: Member - Mick O (VIC) - Friday, Aug 21, 2009 at 10:38

Friday, Aug 21, 2009 at 10:38
Cheers Pete.

Mick
''We knew from the experience of well-known travelers that the
trip would doubtless be attended with much hardship.''
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Reply By: wafarmer - Friday, Aug 21, 2009 at 00:49

Friday, Aug 21, 2009 at 00:49
They are going off to form a nest where they jam them selves in and I suppose they emerge as moths or something.

In the Eastern WA wheatbelt where I come from they usually formed the nest in a mallee or gum tree and quite often the limb that they attach the nest to died off for some reason.

cheers

wafarmer
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Reply By: Richard Kovac - Friday, Aug 21, 2009 at 01:46

Friday, Aug 21, 2009 at 01:46
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Reply By: Member - Doug T (NT) - Friday, Aug 21, 2009 at 03:28

Friday, Aug 21, 2009 at 03:28
Mick
Great shot of the Caterpillars, I remember the first time I ever saw them was when I was a trip in 1967 heading North from Pt Hedland, they were crossing the road and I thought it was a rope , They can be seen also around the Brisbane Airport area, Thanks for sharing it with us.

.
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Follow Up By: Member - Mick O (VIC) - Friday, Aug 21, 2009 at 10:39

Friday, Aug 21, 2009 at 10:39
My pleasure Doug. Cheers Mick
''We knew from the experience of well-known travelers that the
trip would doubtless be attended with much hardship.''
Richard Maurice - 1903

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Reply By: BenDiD - Friday, Aug 21, 2009 at 08:11

Friday, Aug 21, 2009 at 08:11
YUUUUUCK

I remember these creatures well. Growing up in Central Qld we would see these "itchy grubs" all the time. As children we were almost as scared of these things as snakes!

Their reputed power to cause a horrible and untreatable itching was accepted as an unshakable truth, even though I don't remember anyone being unlucky enough to touch one. The only suitable fate was to burn off the nest, and preferably the whole tree (just to be sure) with metho.

Ahh, good times.

Thanks for the video reminder.

Ben
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Follow Up By: Member - Mick O (VIC) - Friday, Aug 21, 2009 at 10:32

Friday, Aug 21, 2009 at 10:32
Yep I recall the nests from primary school days but we never saw them forming the trains and marching off.

Mick
''We knew from the experience of well-known travelers that the
trip would doubtless be attended with much hardship.''
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Follow Up By: Moose - Friday, Aug 21, 2009 at 13:21

Friday, Aug 21, 2009 at 13:21
Let me assure you that the buggers certainly cause horrible itching.
Unfortunatley a childhood experience has left me with an abiding hatred of the damned things.
As someone else has said they aren't only found outback - we've had them (temporarily) in the backyard here in suburban Brisbane. They love wattles.
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Reply By: Dave B ( BHQ NSW) - Friday, Aug 21, 2009 at 08:32

Friday, Aug 21, 2009 at 08:32
You often see their nests up a metre or so in the prickly wattles in the outback.
They are the bag moth caterpillar, and their nest resemble a browny coloured bag hanging from the tree.

It's good fun trying to join the front of the line up to the end, to get them going in an eternal circle.

I think they join themselves up to deter predators, tricking them into thinking it's a snake.

Dave
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Reply By: vk1dx - Friday, Aug 21, 2009 at 08:42

Friday, Aug 21, 2009 at 08:42
If you break the line the leader will stop until the "lost" part rejoins.

We saw them up at Cape Leveque.

Amazing.
AnswerID: 379801

Follow Up By: Russ n Sue - Friday, Aug 21, 2009 at 09:01

Friday, Aug 21, 2009 at 09:01
I have found that if you encourage them to form a circle and then remove the "leader" once the circle is complete, they will continue to go around in a circle. If you leave the "leader" in the circle he/she will soon break away and start a line again.

Cheers

Russ
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Reply By: Member - Mike DID - Friday, Aug 21, 2009 at 11:10

Friday, Aug 21, 2009 at 11:10
They're not just in the outback - I've seen it in Lane Cove National Park 15 km out of Sydney.
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Reply By: Rod W - Friday, Aug 21, 2009 at 12:52

Friday, Aug 21, 2009 at 12:52
Yep we've got em here in WA as well and I've taken a few pictures of them. I call them a moving rope.
I've broken their line a couple of times, they get a bit confused at first but eventually sort out who should be leading them.
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Follow Up By: Rod W - Friday, Aug 21, 2009 at 12:56

Friday, Aug 21, 2009 at 12:56
Sorry WAfarmer I just stumbled in before reading your bit
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Reply By: mazcan barry - Friday, Aug 21, 2009 at 16:40

Friday, Aug 21, 2009 at 16:40
g'day there
i have always refered to them as a/hole catarpilla
s because they follow the ars 'ole in front of them

i've seen them dozens of times in wa in various places and i'm not sure and will stand being corrected but was told once by an old bushman that they are related to spitfires that you quiet often see in nests hanging from wattle trees
itch time to go
mazcan barry
AnswerID: 379887

Reply By: redeye141 - Friday, Aug 21, 2009 at 16:45

Friday, Aug 21, 2009 at 16:45
Yep

Even seen them on Fraser Island earlier this year. They must be invading us....

Redeye
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Reply By: Member - Duncan W (WA) - Friday, Aug 21, 2009 at 20:21

Friday, Aug 21, 2009 at 20:21
G'day Mick. Excellent Macro filming.
Dunc
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