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How to determine what stage a Chrysina Larvae is in?


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Here's a photo of some L2 and L3 C. gloriosa


The size of the head, legs, and spiracles are the key indicators of the instars.  A freshly molted L2 can be the same physical size as a full-grown L1, but a full-grown L2 will of course be much larger than a full-grown L1.  Same for a freshly molted L3 vs. a full-grown L2.  At each molt, the size of the larva's hard (sclerotized) body parts increase in size very noticeably - it's only the larva's skin that is capable of expansion between molts.

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