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TEXTBOOK OF ZOOLOGY 



moil in warm climates. They feed largely upon dead plant tissue, 

 and are found in the soil and beneath stones, dry leaves, and loose 

 bark. One of the commonest species of this order is the "tish 

 moth" or " silverfish, " which attacks book bindings, the paste of 

 wall paper, and starched clothes. It is about half an inch long ajid 

 has three bristles extending from the tip of the abdomen. 



i 



Fig. 177. — Grasshoppers common to western United States. A, Red-legged 

 locust, Melanoplus feniur-rubrum DeGeer, male ; B, Haldeman's locust, Hippiscus 

 coralUpes Hald. ; C, Slioshone grasshopper, Schistocerca shoshone Thomas, female ; 

 D, two striped Mermiria, Mermiria hivittata Serville : E, western meadow grass- 

 hopper, Conocephalus vicinus Morse, female. (From Henderson, Utah Agricultural 

 Experiment Station.) 



The following are some of the families and species found in the 

 western United States: Family Lepismidae. Lepisma saccharina 

 Linn. The silverfish moth; Machilidae, Machilis orhitalis Packard; 



