. Elements of zoology, to accompany the field and laboratory study of animals. Zoology. TlUi GBASSUOPPER 19 resemble dry leaves, blotches looking like mildew are found. Even the legs may 1 )e thin and expanded so as to rescmljle foliage. In our countrj' occur only the twiglike, wingless forms known as walking-sticks (Fig. 13). These walking- sticks change color to corre- spond with the changes of twigs from season to season; for the young walking-sticks, which appear in the spring, are green like young twigs, but in the autumn the adults are gray or brown. This likeness of animals to things ou
. Elements of zoology, to accompany the field and laboratory study of animals. Zoology. TlUi GBASSUOPPER 19 resemble dry leaves, blotches looking like mildew are found. Even the legs may 1 )e thin and expanded so as to rescmljle foliage. In our countrj' occur only the twiglike, wingless forms known as walking-sticks (Fig. 13). These walking- sticks change color to corre- spond with the changes of twigs from season to season; for the young walking-sticks, which appear in the spring, are green like young twigs, but in the autumn the adults are gray or brown. This likeness of animals to things outside of the animal kingdom has been called protective resemblance and has probably Ijecome established because of the freedom from attack which it gives to its possessors. Our common northern species feeds on leaves, especially those of the oak. Occasionally it does much damage to trees. The long-horned grass- hoppers and katydids (Locus- tidffi) are closely akin to the type studied. The family in- ,, Fig. — The northern walking eludes many grasshoppers stick" (Diapheromera Jemorata).. 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 Davenport, Charles Benedict, 1866-1944; Davenport, Gertrude Anna Crotty, 1866- joint author. New York, Macmillan
Size: 938px × 2664px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1911
