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Caterpillars monster my lemon tree.

By Ozi - 1 April 2011 12

caterpillars

This morning I performed my usual pee on the lemon tree in the backyard. As the bladder happily disgorged, I noticed a number of ferocious looking caterpillars munching away on the new leaves on the lemon tree.

There would have been at least 20, in different stages from 1cm long black tiddlers right up to the behemoths in the picture.

When I prodded one of the larger examples, it reared back and two pink prongs whipped out from above its head, forming long, slightly phallic horns. It then began to emit a nasty yellow substance from its mouth, which I imagine is irritating to the skin.

As you can see in the pictures, they are very grand looking caterpillars with a beautiful white underside and big spikes along their back. For our resident lepidopterists, what can I expect these beasts to pupate into?

And for the keen gardeners out there, are they likely to eat all my lemon tree folliage? Thanks RiotACT!

~Ozi.

[Ed- more photos on imageshack]

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12 Responses to
Caterpillars monster my lemon tree.
fabforty 6:07 pm 03 Apr 11

bigfeet said :

My lemon and lime trees also have several of these crawlers.

Rather than kill them, I am happy to pluck them off and transfer them to something other than my citrus.

Does anyone know which type of tree they will survive on? (aside from citrus)

Yes. I have a few Mexican Orange Blossom bushes which these little buggers enjoy. I am killing those on my lemon tree and kaffir lime and allowing the others to graze on the Mexican Orange. It is my version of “natural selection”. My conscience is clear.

INFP 3:32 pm 03 Apr 11

Poor things. I hate having plants specifically because i dont know what to do with the bugs that appear on them, chomping away happily on my precious fruits. I either leave them and think “there is still plenty of the fruits for me and them”… or pluck the caterpillar or whatever off and move it to a different plant/tree.

It’d be good to have doubles of every tree/plant bearing fruits.. one for me, and one to transfer all the bugs onto (they can have it to themselves!). Impractical though… obviously 😛

bigfeet 9:57 am 02 Apr 11

My lemon and lime trees also have several of these crawlers.

Rather than kill them, I am happy to pluck them off and transfer them to something other than my citrus.

Does anyone know which type of tree they will survive on? (aside from citrus)

miz 8:31 pm 01 Apr 11

Dipel or Success are both effective organic products that are commercially available (dilute in a spray bottle with water). http://www.organicsaustraliaonline.com.au/prod2436.htm

CHW 7:23 pm 01 Apr 11

+ 1 for peeing on your tree.

– 1000 for eliminating the caterpillars of a native butterfly.

It has been very, very tough for bees and butterflies up until this last rainy break… that would be why they are making up for lost (population) opportunities.

Yes, my cumquat is crawling with these cattypillars…

No, I do not feel entitled to interfere in their desperate attempt to replenish their genepool.

Jethro 4:34 pm 01 Apr 11

Do you not have internal plumbing you barbarian?

M0les 3:20 pm 01 Apr 11

These turn into giant black butterflies.

Also look-out for bronze shield bugs (stink bugs) that suck the bejeezus out of the very young growing tips.

The most effective method of elimination of both types of pests IMHO is physical removal and squishing (They’re large and relatively few in number). Alas they both also produce pongy defences that irritate skin and eyes.

Ozi 2:51 pm 01 Apr 11

braddonboy said :

They are the larvae of the Orchard Swallowtail Butterfly which are really quite beautiful and nice to see flapping about the garden mid-summer. The butterfly deposits tiny white eggs on the underside or tips of the new growth on citrus trees. Leave the larvae unchecked and, if there’s enough of them or you have a small tree, they will strip it bare of leaves in a very short time.

Hmm considering this, they have been removed:

https://picasaweb.google.com/treloar/CaterpillarsInCanberra

The size of the poop they do is huge too! Man, impressive beasts to be sure.

braddonboy 2:27 pm 01 Apr 11

They are the larvae of the Orchard Swallowtail Butterfly which are really quite beautiful and nice to see flapping about the garden mid-summer. The butterfly deposits tiny white eggs on the underside or tips of the new growth on citrus trees. Leave the larvae unchecked and, if there’s enough of them or you have a small tree, they will strip it bare of leaves in a very short time.

EvanJames 2:21 pm 01 Apr 11

Yates sell very good stuff for caterpillars (the caterpillars disagree).

Kaz 2:15 pm 01 Apr 11

We have them too – they’re devouring our kaffir lime tree. They’re far too pretty to squash. We’re hoping they’ll hang around (so to speak) through the cocoon stage so we can see what they end up looking like.

digitalchet 2:11 pm 01 Apr 11

Looks like it might be an Orchard Swallowtail Butterfly. They look quite spectacular.

More info on Wikipedia or here

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