336 



In anticipation of the further spread into Canada of these two insects, 

 seven species of parasites and a predaceous beetle, Calosoma sycophanta, 

 have been successfully introduced and at present are maintaining- 

 themselves successfully on the brown-tail moth and certain native 

 insects. 



MacLaine (L. S.). Rearing the Parasites of the Brown-Tail Moth in 

 New England for Colonization in Canada. — Agric. Gaz. Canada, 

 Olfaiva, iii, no, 1, January 1916, pp. 22-25, 5 figs. [Received 

 6th June 1916.] 



The Hymenopterous parasite, Apanteles lacteicolor, Vier., the 

 Tachinid, Compsilura concinnata, Meig., and the predaceous beetle 

 Calosoma sycophanta, L., have been reared in Massachusetts for libera- 

 tion in those parts of Canada in which the brown- tail moth [Euproctis 

 chrysorrhoea] was present. A. lacteicolor has two or three generations 

 annually and after emerging from larvae of the brown-tail moth is 

 able to attack the larvae of Datana or Hyphantria. The parasite is 

 forwarded in the pupal stage and the cocoons are placed in cold storage 

 to retard development until they can be liberated in the field. C. con- 

 cinnata has two or three generations each year and is known to be able 

 to parasitise about 50 different species of insects. C. concimiata was 

 reared from larvae of the gipsy moth rather than from those of the 

 brown-tail moth, owing to the poisonous nature of the hairs of this 

 species. Transport was effected in a manner similar to that of 

 A. lacteicolor. The best method of colonising C. sycophanta is to 

 collect beetles in the adult stage from young oak woods. They are 

 shipped in colonies of 100, containing equal numbers of each sex. 

 When placed in wooden boxes covered with wire mosquito netting 

 and packed in damp moss, they are ablj to travel long distances with 

 a low percentage of mortality. 



Hewitt (C. G.). Outline of Entomological Work projected for 1916. — 



Agric. Gaz. Canada, Ottawa, iii, no. 5, May 1916, pp. 400-402. 



Work connected with insects affecting field crops will include the 

 carrying out of control measures against locusts and cutworms, and 

 investigations on white grubs, onion maggots and Cecidomyid flies 

 attacking cultivated grasses and cereals. In Nova Scotia observations 

 on the best method of controlling the bud-moth [Eucosma ocellana\ 

 fruit-worms and other insects affecting the apple will be continued. 

 New insecticides will be tested in orchards in the Annapolis Valley. 

 In the Niagara district investigations on Aphids attacking apples and 

 nursery stock will be continued. In British Columbia new work will 

 include the study and control of the pear thrips [Taeniothrips pyri] 

 in Vancouver, of Otiorrhynchus ovatus (strawberry weevil), and of the 

 codling moth [Cydia pomonella] in the Okanagan Valley. With 

 reference to insects affecting shade and forest trees, it is proposed to 

 investigate forest conditions in Quebec and Northern Ontario, special 

 attention being paid to boring insects in spruce and pine. The increased 

 planting of trees on prairie farms Avill render necessary a study of 

 insects attacking such trees. The borer of western cedar and bark 

 beetles will be investigated in British Columbia, also the alternate 



