. The natural history of the farm; a guide to the practical study of the sources of our living in wild nature. Natural history. Fig. 117. The buffalo-gnat pecuarum, after German). {Simulium and filled with water by the rains, often ftimish the chief supplies of mos- qtiitos to a whole neighbor- hood. Few are reared in open water inhabited by fishes; for the fishes eat them. The smaller the pool, the more likely it is to contain mosquito larvae. The larvae take air at the surface of the water, but swim down below to find forage or to escape danger. Many species are adapted to the drying up of t
. The natural history of the farm; a guide to the practical study of the sources of our living in wild nature. Natural history. Fig. 117. The buffalo-gnat pecuarum, after German). {Simulium and filled with water by the rains, often ftimish the chief supplies of mos- qtiitos to a whole neighbor- hood. Few are reared in open water inhabited by fishes; for the fishes eat them. The smaller the pool, the more likely it is to contain mosquito larvae. The larvae take air at the surface of the water, but swim down below to find forage or to escape danger. Many species are adapted to the drying up of their native pools, and live on (usually in the egg stage) in absence of water, and come on again and fly and sing and bite at their proper seasons. Some are short-lived, and run through quite a number of generations in a single summer; these develop in vast numbers when a rainy season main- tains an abtindance of little pools. Black-flies (Family Simuliidae) develop in nmning water, and are most troublesome about woodland streams. The habits of the larvae, which live upon stones, have been discussed on pages 36 and 37. When there are no stones in the streams, larvae may be found hanging to sticks and to grass blades that trail in the edge of the current. The eggs are laid on logs and stones at the water's edge. The adults (fig. 117) love the sunshine, and their biting is troublesome only by Fig. 118. horse-fly (from the U. S. Bureau of Entomology).. 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 Needham, James G. (James George), 1868-1956. Ithaca, N. Y. , The Comstock Publishing Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectnaturalhistory, booky
