. Beginners zoology. Zoology. INSECTS 65 surface of each membrane. State any advantage or dis- advantage in having the ears located where they are. Ovipositor. — If the specimen is a female, it has an egg- placer or ovipositor, consisting of four blunt projections at the end of the abdomen (Fig. 107). If it is a male, there are two appendages above the end of the abdomen, and smaller than the parts of the ovipositor. Females are larger and more abundant than males. In laying the eggs, the four blunt points are brought tightly to- gether and then forced into the ground and opened (Fig. 108). By
. Beginners zoology. Zoology. INSECTS 65 surface of each membrane. State any advantage or dis- advantage in having the ears located where they are. Ovipositor. — If the specimen is a female, it has an egg- placer or ovipositor, consisting of four blunt projections at the end of the abdomen (Fig. 107). If it is a male, there are two appendages above the end of the abdomen, and smaller than the parts of the ovipositor. Females are larger and more abundant than males. In laying the eggs, the four blunt points are brought tightly to- gether and then forced into the ground and opened (Fig. 108). By repeating this, the grasshopper makes a pit almost as deep as the abdomen is long. The eggs are laid in the bottom of the pit. Draw a side view of the grass- hopper. Thorax. — This, the middle por- tion of the body, consists of three segments or rings (Fig. 107). Is the division between the rings most apparent above or below ? Which two of the three rings are more closely united 1 The front ring of the thorax is called prothorax. Is it larger above or Does it look more like a collar or a (Fig. 106.) A spiracle is found on the second ring {mesothorax^ or middle thorax) just above the second pair of legs. There is another in the soft skin between the prothorax and the mesothorax just under the large cape or collar. The last ring of the thorax is called the metathorax (rear thorax). How many legs are attached to each ring of the tho- rax ? Can a grasshopper walk ? Run ? CHmb ? Jump } Fly.'' Do any of the legs set (See Fig. 106.). Fig. 108. — Grasshopper LAYING Eggs. (Riley.). 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 Coleman, Walter M. Toronto : Macmillan
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1921
