Ninth Report of the State Entomologist 365 



from several species of insects besides the curculio, and from some of 

 the fungus attacks to which they are liable, it would be well always 

 to resort to this method of pro- 

 tection wherever the curculio 

 abounds. Where this is not 

 done, perhaps the next best 

 means of relief would be that 

 of jarring the beetles from the 

 vines upon a cloth when they 



• .^ ^, , . J • ^1 Fig. S2.— The grape curculio, Chaponius Ds.equa 



Visit the berries during the lis: a, grape injured by the larva; 6. the larva. 



month of June for feeding on them and for depositing their eggs. 



The beetle may be recognized by its black color sprinkled with 

 grayish spots; its prothorax with four large tubercles of which the 

 outer ones are acute; the alternate interspaces of the wing-covers the 

 more elevated and somewhat uneven; and its rounded form, unlike the 

 oval of most of the curculio tribe. Its length is rather more than one- 

 tenth of an inch. It is represented in Figure 32. 



In August, the larva having attained its growth, drops to the ground 

 and enters it for pupation, where it remains for about a month before 

 changing to the beetle. If during this time the ground beneath the 

 vines could be worked, many of the delicate larvae or pupce Avould be 

 crushed or injured to a degree sufficient to prevent their maturity. The 

 arsenical spraying so effective against the plum curculio, would not 

 be available, it is thought, for protection against this insect. See 

 Walsh, First Annual Report on the Insects of Illinois, 1878, pp. 13-21, 

 fig. 1. Riley, First Report Insects of Missouri, 1868, pp. 128, 129,, 

 figs. 70-72. Saunders, Insects Injurious to Fruit, 1889, pp. 300, 301,. 

 figs. 311, 312. Webster, in Insect Life, iii, 1891, pp. 452, 453. 



The Peach-bark Scolytus, Phloeotribus liminaris {Harris). 



Mr. George C. Snow, of Penn Yan, N. Y., sent on the 7th of May, 

 peach bark infested with the above-named insect, accompanied by the 

 following note: 



I send you by this mail under separate cover a section of peach bark 

 which you will find filled with an insect that is new to me. It may be 

 of interest to you to know that the trees that they are in are literally 

 full of them from collar to branches. 



I find an unusually large number of borers in the trees this spring. I 

 am intending to make a mixture of sludge-oil soap, carbolic acid and 

 lime for a tree- wash, to prevent any eggs from being deposited. Do 

 you know of anything better ? 



Answer. — The insects sent in the bark are a destructive bark-borer,, 

 one of the Scolytidce, known as Phloeotribus liminaris. Ordinarily it 



