June, '02] ENTOMOLOGICAL NEWS. IQ3 



It is further of interest to note that the individuals having three rows 

 are thus distributed: Florida i r?, Texas (probably near the Nueces 

 River) 4 J 1 , Nuevo Laredo (Tamaulipas) 3 J\ 2 $, Teleman (Vera Paz, 

 Guatemala) i <^. 



Undoubtedly the existence of this amount of variation in this character 

 in titia impairs the value of the classification which I have employed. I 

 have, however, implied its not infallible nature (/. c., p. 20, lines 14-17), 

 have cited some exceptions (/. c., p. 22, foot-note), and am still unaware 

 that a better character exists. PHILIP P. CALVERT. 



DEPARTMENT OF EGONOMlg ENTOMOLOGY 



Edited by Prof. JOHN B. SMITH, Sc. D., New Brunswick, N. J, 



Papers for this department are solicited. They should be sent to the editor, 

 Prof. John B. Smith, Sc.D., New Brunswick, N. J. 



NUMBER OF BROODS OF THE CODLING MOTH AS INDICA- 

 TED BY PUBLISHED DATA. 



By C. P. GILLETTE, Fort Collins, Col. 



It seems as if the economic entomologists of the apple-growing sections 

 of the United States should have determined, before this, the number of 

 annual broods of the codling moth in their respective districts. Opinions 

 as to the number are common enough, but these seem largely to be with- 

 out definite data to rest upon. Some of the conclusions drawn from pub- 

 lished records are plainly in error as I shall show. 



The writer read a paper before the Association of Economic Entomolo- 

 gists in Denver last summer in which it was shown that the codling moth 

 is quite definitely two-brooded in Colorado, both at the northern limit of 

 successful apple-growing in Larimer County, and in the warm valleys of 

 the south-west where the tender stone fruits are grown to perfection. 

 Letters from Mr. Munson of the Maine Experiment Station and from Dr. 

 Smith, of N. J. Experiment Station, were also quoted, stating that there 

 were, at least, partial second boods in both those States the past sum- 

 mer, and the suggestion was made that perhaps we shall find, after all, 

 that the codling moth is definitely two-brooded throughout its range. Dr. 

 Smith expressed his opinion, however, that it was only a partial second 

 brood that was appearing at New Brunswick. If the moth passes annu- 

 ally through one, or two, or one and a partial second broods in a locality, 

 the fact could be easily determined. To determine with certainty, a par- 

 tial third brood would not be easy, and it would require a large amount 

 of very careful breeding-cage work to determine a partial fourth brood 

 with any certainty at all. 



In spite of the opinion of many entomological friends that there are 



