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Published online by Cambridge University Press: 31 May 2012
The development of wings from imaginal discs has been carefully worked out in many forms of insect larvae. Marshall's important paper on te development of the wings of a caddis-fly, Hesperophylax (Platyphylax) designatus Walk. (Zeitschrift fur wissenschaftlicheZoologie, Bd. CV, Heft 4, 1913) is almost the only literature dealing with this phenomenon in the Trichoptera.