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Calvia quatuordecimguttata larva - Calvia quatuordecimguttata

Calvia quatuordecimguttata larva - Calvia quatuordecimguttata
Qu├ębec, Quebec County, Quebec, Canada
June 12, 2005
larva on white birch bark.

Keys to C. quatourdecimguttata, too
Just to put this completely to rest, I keyed it out with Rees et al.,(1) and it is a textbook example of C. quatourdecimpunctata. Medium-length unbranched spines (senti) on every abdominal segment; pointed projection at rear of 9th abdominal segment; distinctive color and pattern.

I'd say this is a third instar, the fourth instar has some additional white on it.

Who Ided this larva and how? It would be nice to know so we can add that info to the species page.
What instar is it? I understand that they look quite different each time that they molt.

I identified it with the adul
I identified it with the adult. I don't know what instar it was when I took this picture, but it's one of the last ones. At first they are all black, then they have two small light spots, then more lights spots appear.

It seems that you have observed them pretty well. But do you mean that your raised this larva to adult or that there were some adults nearby? If it is the latter, how can you be sure that this larva belongs to the same species? I have found five different species of ladybugs in one patch of milkweed and I wouldn't know about the nearby larvae in such case.

This larva was not raised, bu
This larva was not raised, but I observed and raised hundreds of them. In 2005, I found a dozen egg layings on this tree alone, and took some of them to be raised in captivity. I did this again in 2006. I also found Harmonia axiridis on this tree, but the larva doesn't look like that. I have no doubt that this is Calvia quatuordecimguttata. I would say it's the fourth instar, but I'm not sure.
Here are other photos I took of this species:

This is the kind of careful observation that we need in Bugguide. I see too many wild guesses and vague explanations.

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