Economic entomology for the farmer Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; economicentomolo00smit Year: 1906 328 AJV ECONOMIC ENTOMOLOGY. Before taking up the more typical forms, we may briefly con- sider the Aplia)iiptera, or fleas, which are usually considered as flies that have lost their wings as a result of parasitic habits. They are small, transversely flattened creatures, usually brown in color, with small heads, piercing mouth parts, and the merest rudiments of wing-pads. To replace wings, they are furni
Economic entomology for the farmer Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; economicentomolo00smit Year: 1906 328 AJV ECONOMIC ENTOMOLOGY. Before taking up the more typical forms, we may briefly con- sider the Aplia)iiptera, or fleas, which are usually considered as flies that have lost their wings as a result of parasitic habits. They are small, transversely flattened creatures, usually brown in color, with small heads, piercing mouth parts, and the merest rudiments of wing-pads. To replace wings, they are furnished with greatly developed posterior legs fitted for jumping, nnd in Fig. 377. Rabbit flea, much enlarged. proportion to their size their leaps are wonderful. They live in the adult stage among the hair of warm-blooded animals, sucking blood, their form enabling them to move about easily in even the thickest fur. So also the position of the spines clothing the body is such that every effort of the insect pushes it forward, which accounts for the difiiculty in holding a specimen when captured. The larvae are whitish, small, worm-like creatures, almost cylin- drical in form and with small brownish heads which bear fairly well developed mouth parts. They live upon partly decayed matter in or near the lairs of the animals upon which the adults feed, and the eggs are probably dropped at hap-hazard by the females while the host is at rest. A rug used as a bed for a dog or cat may be found full of eggs at almost any time during spring
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