Elementary studies in insect life Elementary studies in insect life elementarystudie00hunt Year: 1902 ELEMENTARY STUDIES IN INSECT LIFE FIG. 14. Newly hatched cater- pillar of the black swallowtail on flower-stern of wild parsley. Enlarged. When first this larva measures itself upon the flower- stalk it is three-twenty-fifths of an inch long,— three times the diameter of the egg from which it came. After stretching itself and resting a moment it turns around and makes its first meal off its shell,— not prompted so much by hunger as by the protective instinct which leads it to en- deavor to
Elementary studies in insect life Elementary studies in insect life elementarystudie00hunt Year: 1902 ELEMENTARY STUDIES IN INSECT LIFE FIG. 14. Newly hatched cater- pillar of the black swallowtail on flower-stern of wild parsley. Enlarged. When first this larva measures itself upon the flower- stalk it is three-twenty-fifths of an inch long,— three times the diameter of the egg from which it came. After stretching itself and resting a moment it turns around and makes its first meal off its shell,— not prompted so much by hunger as by the protective instinct which leads it to en- deavor to remove all traces likely to lead to its discovery by an enemy. As it stretches itself out again, study it under the hand-lens. It has the normal number of segments, twelve besides the head. Each segment has six p r o t u b erances, and from each of these in turn grow five or six hairs, making in all a rather bristling little crea- ture. The first three segments of the body, known as the thorax, have true jointed legs, each with a horny claw for grasping the supporting twig; the sixth, sev- enth, eighth, ninth and twelfth have each a pair of soft unjointed legs, or pads known as prolegs, aids in locomotion and in maintaining position ' when the Avind blows.' Its purposes, intuitions and instincts have been placed in verse.
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