Elementary lessons on insects elementarylesson00need Year: 1928 32 ELEMENTARY LESSONS ON INSECTS for example, is very different from the adult (compare figures 16 and 18). The accompanying figures (see figure 12) show the change in progress. In 1—the nymph has climbed from the water up a post attached its claws firmly, and the adult has lifted its head out through a rent in the back of the old nym- phal skin. In 2— head, thorax, wings and legs are all out, and the crea- ture is hanging by its still enclosed tail, momentarily resting. In 3—the adult has righted itself and is standing on th
Elementary lessons on insects elementarylesson00need Year: 1928 32 ELEMENTARY LESSONS ON INSECTS for example, is very different from the adult (compare figures 16 and 18). The accompanying figures (see figure 12) show the change in progress. In 1—the nymph has climbed from the water up a post attached its claws firmly, and the adult has lifted its head out through a rent in the back of the old nym- phal skin. In 2— head, thorax, wings and legs are all out, and the crea- ture is hanging by its still enclosed tail, momentarily resting. In 3—the adult has righted itself and is standing on the now empty skin, but its wings are not yet fully expanded. This is, indeed, a transformation. It may require half an hour for completion. During this time the callow insect is peculiarly helpless.
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