Reference:

Majerus, M. E. N., 1983a. Larval colour variation in Phlogophora meticulosa (L.)(Lep.: Noctuidae). part I: The variation, and its control in instars 1-3.

URL:

https://ia802708.us.archive.org/1/items/proceedingstrans198386brit/proceedingstrans198386brit.pdf

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