THE QUINCE CURCULIO. 



Co7iotrachelus cratcegi, Walsh. 

 Order Coleoptera. Family Curculionid^. 



UINCES are more largely grown in western New 



York than elsewhere in the Union. The in Jus 



try has grown up slowly and quietly, and has 



not attracted general attention ; yet, in its way, 



it is one of the important agricultural interests 



of the state. Quince growing can never assume 



the proportions of other orchard industries, 



because of the limited demand for the fruit, 



and for this reason, also, the most careful attention must be given to 



marketing the crop and to reducing the injuries from a number of insects 



and fu7igous enemies y* 



The insect enemies which have thus far seriously interfered with 

 the growing of quinces in New York may be counted on the fingers of 

 one hand. Such an enumeration would include the round-headed 

 apple-tree borer, the codling-moth, f the New York plum lecanium 

 scale,t and the insect discussed in this bulletin — the quince curcuho. 

 Of these insect enemies, the first and the last one mentioned have 

 caused New York quince growers by far the most trouble and damage ; 

 the lecanium scale was noticeably injurious for only one or two 

 seasons in a few isolated orchards, and comparatively few of the 

 wormy quinces are to be credited to the work of the codling-moth. 

 Quince trees often suffer more from the attacks of the round-headed 

 apple-tree borer than do apple trees. Fortunately, however, this 

 borer is not as yet well established in many of our quince orchards, 

 and is thus rather local in its distribution. One quince grower may 

 have to keep constantly on the alert to prevent the borers from ruining 



* Bulletin So, Cornell Experiment Station. The Quince in western New 

 York, by Professor Bailey. 



\ Discussed in Bulletins 142 and 108. 



