I02 FIELD ZOOLOGY. 



With the help of your instructor, and aided by good 

 insect manuals, many of the insects found may be named. 

 At least, you will be able to determine by the mouth parts 

 what different sorts of insects are attracted by the light 

 and fly toward it. Light has curious effects upon different 

 animals; some are attracted; some are repelled. As 

 between diffused light and a single point, some insects 

 will be drawn toward the diffused light, while they are 

 unaffected by the single point. How is it with these 

 insects ? How is it with yourself ? 



The com or the wheat field, the region of the taller 

 forage grasses, or sometimes the blue grass of the lawn 

 may yield, close down to the roots or up a ways on the 

 stem, numerous specimens of chinch bugs. Can you 

 discover the adults? Dig down among the roots; can 

 you discover them here? What is this stage you find 

 under the surface of the ground? On what are they 

 feeding? Can you find the beak? You may possibly 

 discover short-winged and long-winged species, or all the 

 individuals in a given area may have short wings. When 

 disturbed do the insects fly or crawl? Have you seen 

 them migrating? Catch and kill as many as possible. 



In early midsummer, whenever that arrives for 

 your locality, be on the watch for cicadas. The first 

 cicada song should be the signal for the hunt. A hundred 

 chances to one the singer will be "up a tree," and you will 

 not be able to go after it. Be patient; the cicadas spend 

 the immature stage below the ground surface; so in the 

 orchard, or on the lawn, along the fences or hedge rows, 

 where trees grow, watch the ground and you will probably 

 be rewarded by finding a cicada moulting for the last 

 time. In this condition the insect may easily be caught. 

 You may discover some of the grayish, lumbering nymphs 



