THE CIGAE CASE-BEAEEK. 

 ENEMIES. 



41 



PARASITES. 



Fletcher in 1897 reported a hymenopterous parasite of tiiis insect, 

 Microdus laticinctus Ashm., from Port Hope, Ontario. 



At North East, Pa., at the time of the emerging of the adults, 

 another hymenopterous parasite, Habrocytus sp. (fig. 12), as deter- 

 mined by Mr. J. C. Crawford, was reared in considerable numbers. 

 About 10 per cent of the transforming insects were parasitized. 



PREDACEOUS ENEMIES. 



4 



The writer found that the eggs of the case-bearer were extensively 

 destroyed by a minute yellow mite, which during the egg period was 

 very abundant all 

 over the orchard. 

 The larva? of the 

 lacewing fly 

 (Chrysopa oculata 

 Say) and various 

 species of ladybird 

 beetles vigorously 

 attacked the eggs 

 and larvae. 



METHODS OP 

 CONTROL. 



A full account 



of the results of FlG> 12- — Habrocytus sp., a parasite of the cigar case-bearer. 



Greatly enlarged. (Original.) 



the various spray- 

 ing experiments carried out in Canada by different fruit growers will 

 be found in Fletcher's report for 1894 as entomologist and botanist for 

 the Canadian experimental farms, pages 201 to 206. It was well 

 demonstrated that the insect can be held under control with either 

 a kerosene emulsion or a Paris green spray applied in the early spring 

 before and while the leaf buds are opening. 



In orchards regularly treated with arsenical sprays for the codling 

 moth the cigar case-bearer, if present in orchards, will undoubtedly 

 be kept in check. 



