THE CURRANT-STEM GIRDLER. 



Janus integer^ Norton.* 



Order Hymenoptera ; super-family Tenthredina. 



The indications are that currant growers will soon have another 

 serious enemy to combat. Most growers are already familiar 

 with the operations of the " green worms," and many have had 

 their bushes badly damaged by one or both of the two common 

 currant borers, known as the imported borer and the American 

 borer. Within the past few years, however, an insect which is 

 both a girdler and a borer, has been attracting considerable atten- 

 tion by its destructive work in quite widely separated portions of 

 the country. Unfortunately the ravages of the insect seem to be 

 increasing each year, but fortunately a study of its habits has 

 shown that it can be easily and quickly checked. Every currant 



*Synonomy. 



Cephus filicornus . Harris' MS. catalogue. A manuscript name given 



by Say for a male specimen taken at Milton, Mass. , in September, 



1830. 

 Cephus integer. Harris' MS. catalogue. A manuscript name given 



by Say for a female specimen taken on a window at Cambridge, 



Mass., June 20, 1S32. 



1861. Cephas integer Norton. Proc. Bost. Soc. Nat. Hist., VIII, 224. 



First description of the insect, from Harris' specimens. 



1862. Janus flaviventris Fitch. Seventh Rept. on N. Y. Insects, p. 852. 



Description of adult. 



The willow-shoot saw-fly discussed by Dr. Riley as Phyllcecus integer 

 Norton is doubtless another insect, Janus abbreviatus Say, according to Mr. 

 Harrington (Canadian Uroceridae, in Trans. Roy. Soc. Canada for 1893, 

 p. 133). Dr. Riley admits that there were some differences between his 

 specimens and Norton's description of _/. integer. 



The reference oi Fitch's J. Jlaviventris as a synonym of Norton's y. 

 integer was made after a careful examination and comparison (by Mr. 

 A. D. MacGillivray) of the former's description and our bred specimens 

 with Norton's descriptions and the original type specimen from the Harris 

 collection. According to Know's latest generic table, the insect belongs to 

 the genus Janus. 



