1904 



ENTOMOI OGICAL SOCIETY. 



10& 



jurious forms. Sucli are the Tent Caterpillar, Army-worm, Cutworm, Peach- 

 tree Borer, Cabbage-worm., Codling worm, Canker Worm, and Mediterranean 

 Flour Moth. 



The Diptera are two-winged, and include such insects as the Hessian Fly, 

 Wheat Midge (Fig. 49), Mosquitoes, Craneflies, Eobber-flies, Bot-flies, House- 



Fig. 41. Tiger- 

 Beetle. 



Fig. 40. Saw-flies : a. male ; b. female 

 ( Hymen opt era ) 



Fig. 42. 



Lady-bird 



beetle. 



Fig. 43. 



Saw-horn 



beetle (Bup- 



restis). 



Fig. 44. Leaf- 

 horn beetle. 



flies, Tachina flies, Syrphus flies (Fig. 50) and cheese flies. The Tachina and 

 Syrphus flies are very beneficial. 



The Hemiptera or Bugs are divided into the True-bugs (Fig. 51), the 

 Leaf-hoppers and Plant lice (Fig. 52) and Lice. Nearly all are injurious,, 

 and frequently do much injury. They suck the juices from plants. 



Fig. 45. 



Plant-eater 



beetle. 



Fig. 47. Snout- 

 beetle. 



Fig. 46. Colorado Potato-beetle. 



The Orthoptera are often divided into the Jumpers, the ^Valkers, the 

 Graspers, and the Runners. The first includes the Grasshoppers, Locusts, 

 Crickets; and the last the Cockroaches. 



The Neuroptera comprise the Ant-lions, Lace-wings (Fig. 53), Dragon 

 fiJes (Fig. 54). 



