Pests and Diseases forum: Brithys - Lily Borer

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Name: Glen Ingram
Macleay Is, Qld, Australia (Zone 12a)
Bearded Dragon young male
Region: Australia Annuals Canning and food preservation Herbs Tropicals Foliage Fan
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Gleni
Nov 20, 2013 9:50 PM CST
Does anyone know how to cope with Brithys crini (Lily Borer, Crinum Borer)? It is a moth of the Noctuidae. It is found in different parts of the world and is supposedly native to Queensland and the Northern Territory in Australia. But I wonder if it is actually introduced here.
When the caterpillar is on the outside of the leaf it is easy to cope with but - when it has bored into the leaf and into the bulb - spraying doesn't seem to work, and it just annihilates many of my Crinum, Clivia and Hippeastrum (and others). The bulbs become a rotten mass.
The only way to cope seems to be to cut the leaves off with the cats inside and dig into the bulbs after them. All this is not great for the plants. Every year it is a relentless fight that I am considering conceding.

Thumb of 2013-12-11/Gleni/232bb2
This a cat inside the leaf.
[Last edited by Gleni - Dec 11, 2013 3:17 AM (+)]
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Name: Glen Ingram
Macleay Is, Qld, Australia (Zone 12a)
Bearded Dragon young male
Region: Australia Annuals Canning and food preservation Herbs Tropicals Foliage Fan
Plays in the sandbox Cactus and Succulents Garden Photography Hybridizer Composter Sedums
Image
Gleni
Nov 23, 2013 5:04 AM CST
Here they are on small leaved lilies where they can't bore in.

Thumb of 2013-12-11/Gleni/3e13d7

[Last edited by Gleni - Dec 11, 2013 3:19 AM (+)]
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Name: Glen Ingram
Macleay Is, Qld, Australia (Zone 12a)
Bearded Dragon young male
Region: Australia Annuals Canning and food preservation Herbs Tropicals Foliage Fan
Plays in the sandbox Cactus and Succulents Garden Photography Hybridizer Composter Sedums
Image
Gleni
Nov 24, 2013 4:24 PM CST
At first I thought these were Lily Borers but it is apparently another lily caterpillar of the moth Spodoptera picta.

Thumb of 2013-12-11/Gleni/a63e24

[Last edited by Gleni - Dec 11, 2013 3:22 AM (+)]
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Name: Glen Ingram
Macleay Is, Qld, Australia (Zone 12a)
Bearded Dragon young male
Region: Australia Annuals Canning and food preservation Herbs Tropicals Foliage Fan
Plays in the sandbox Cactus and Succulents Garden Photography Hybridizer Composter Sedums
Image
Gleni
Feb 6, 2014 4:04 PM CST
I have solved my Brithys moth problem at last. I used Yates SUCCESS, Naturalyte Insect Control. Active constituent Spinosad. Apparently, "Spinosad has translaminar movement, which means it moves into the leaf." And Brithys's cats are usually under the epidermis having a wonderful time.
[Last edited by Gleni - Feb 8, 2014 3:06 AM (+)]
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Name: woofie
NE WA (Zone 5a)
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woofie
Feb 7, 2014 10:40 AM CST
I'm just now reading this thread; so sorry you didn't get any assistance, but glad you found a solution and were kind enough to share it! Smiling
Confidence is that feeling you have right before you do something really stupid.

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