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Emigrant?

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Emigrant?

Postby Fujis2 » Sun Feb 20, 2011 9:47 pm

Any idea on the caterpillar? Suspect to be some Emigrant but after checking my breeding records, it doesn't match either the Lemon or Orange Emigrant. Length about 25 mm.

The blue & clear droplets really unique :pdr:

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Fujis2
 
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Re: Emigrant?

Postby Laurence Leong » Mon Feb 21, 2011 10:21 am

I had seen slightly different shades of colours of these cats at Alexandra on the same host plant. Lemon Emigrant I guess.
Laurence Leong
 

Re: Emigrant?

Postby kctsang » Mon Feb 21, 2011 3:21 pm

Oh !!! those clear and blue liquid must be highly toxic !!!
don't touch the cat !!!
:thumbsup: :thumbsup: :thumbsup:
kctsang
 

Re: Emigrant?

Postby EarlyStages » Mon Feb 21, 2011 5:13 pm

Hi Soon Chye,

This is not an Emigrant (Catopsilia) cat, which look very different, but rather an Eurema — almost certainly the Three-spot Grass Yellow (E. blanda).

Keith
EarlyStages
 

Re: Emigrant?

Postby Fujis2 » Mon Feb 21, 2011 9:05 pm

KC, I did touch the droplet but ok, I was actually thinking to taste it :giggle:

Laurence, I bred Lemon Emigrant before, their caterpillars are different ;)

Keith, you're right, search around the web & found it's closely matched the Three-Spot Grass Yellow. Any idea on the liquid?

Gan, Thanks.

Btw, those cats pupating soon :yes:

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Re: Emigrant?

Postby EarlyStages » Tue Feb 22, 2011 12:04 pm

Fujis2 wrote:Keith, you're right, search around the web & found it's closely matched the Three-Spot Grass Yellow. Any idea on the liquid?

I have seen these droplets on numerous immature pierids around the world, and remember lightly rinsing such a caterpillar with water to see what would happen. Not surprisingly, the "oily" blobs washed away only to be secreted again a short time later. Recent research (for example here and here) has established that the substance serves as an ant deterrent and likely provides effective defense against many other predatory arthropods, probably in conjunction with potent secondary metabolites that the larvae sequester from their hostplants.

Keith

I'm doing well, Gan, thanks; just very busy.
EarlyStages
 

Re: Emigrant?

Postby Fujis2 » Tue Feb 22, 2011 10:16 pm

Thanks Keith, good reading material to go into my digital gadget ;)
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Re: Emigrant?

Postby Fujis2 » Wed Feb 23, 2011 9:15 pm

pupae
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