. Annals of applied biology. Biology, Economic; Biochemistry. E. Hargreaves 310 at this stage two layers of chitin are to be distinguished, one being that which originally enclosed the fourth instar, the other, inside this, which is destined to be the adult skeleton (Fig. 36). This may be called an. Fig. 36. Section through head of fourth instar. internal moult. The eyes, from being mere spots in the young pupa, grow enormously to form the compound eyes of the imago. The body grows very much in thickness, becoming box-hke in the older pupa (Fig. 27). Also, the antennae, legs and wings may be s
. Annals of applied biology. Biology, Economic; Biochemistry. E. Hargreaves 310 at this stage two layers of chitin are to be distinguished, one being that which originally enclosed the fourth instar, the other, inside this, which is destined to be the adult skeleton (Fig. 36). This may be called an. Fig. 36. Section through head of fourth instar. internal moult. The eyes, from being mere spots in the young pupa, grow enormously to form the compound eyes of the imago. The body grows very much in thickness, becoming box-hke in the older pupa (Fig. 27). Also, the antennae, legs and wings may be seen curled up inside the outer case, but outside the body of the insect. As is the case in the preceding stages, the new legs and antennae are formed inside the old ones, and since those of the imago are much longer than those of the pupa, they become folded as they grow. The claws and second tarsal segment easily fill one of the pupal legs (Fig. 37). The. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Association of Applied Biologists; Association of Economic Biologists. [Wellesbourne, Warwick, etc. ] Association of Applied Biologists [etc. ]
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