80 



APPLIED ENTOMOLOGY 



As these insects are beneficial, attempts have been made to establish 

 them in other places, but thus far they do not seem able to withstand 

 severe winters, and in the case of the last named species it has until now 



FIG. 52. FIG. 53. 



FIG. 52. European Mantis (Mantis religiosa L.), natural size, with wings spread. 

 (Original.) 



FIG. 53. Egg case of European Mantis, natural size. (Original.) 



apparently been unable to live north of Ontario, and colonies placed in 

 New England have died out. 



Family Phasmidae (The Walking-Sticks) 



The Phasmids are generally called " walking-sticks." Their bodies 

 are usually long and stick-like, due largely to their very long and slender 



FIG. 54. Common Walking-stick (Diapheromera femorata Say) natural size. (Original.) 



meso- and metathoracic segments. Their legs and antennae are also 

 generally long, and the 15 to 20 kinds found in the United States 



