270 Forty-second Report on the State Museum. [128] 



were found. The beetle was kept alive for several days and deposited 

 an egg. 



This insect is probably known generally to the orchardists in locali- 

 ties where it occurs in injurious numbers, but for the benefit of those 



Fig. 39.— The round-headed apple-tree borer, Saperda Candida ; a. the grub or larva; 

 b, the pupa ; c, the imago or beetle. 



who may not be familiar with its appearance, representation is given 

 of it in Fig. 39 above. 



The above observations of Mr. Junkins are of considerable impor- 

 tance, as they extend the period of oviposition of the beetle much 

 beyond the period heretofore assigned to it, and consequently the time 

 during which the application of soap to the trunk of the apple tree to 

 protect it from the egg-deposit is to be made, will also require a 

 corresponding extension. 



Professor Riley has stated: 



The female deposits her eggs during the month of June, and the 

 young worms hatch and commence boring into the bark within a 

 fortnight afterward. * * * Keep the base of every tree in the 

 orchard free from weeds and trash, and apply soap to them during 

 the month of May, and they will not likely be troubled with borers. 

 (First Report on the Insects of Missouri, pp. 43, 45.) 



Dr. Fitch states as follows in his account of this insect given in his 



First Report on the Insects of New York : 



The beetle makes its appearance every year early in June. * * * 

 In the course of this and the following month the female deposits her 

 eggs (page 13). 



Commonly, here in Washington county, they begin to be found 

 upon trees about the twentieth of June, from which time until the 

 close of the month they appear to be more numerous than they are 

 afterward (page 17). 



In all orchards where the borer is present, this measure [soap 

 application] should invariably be resorted to the latter part of May, 

 or in more northern localities, where the beetle will be somewhat 

 later in appearance, early in June (page 22). 



