333 



{Alsophila pometaria Harr). was particularly injurious, and the wide- 

 spread distribution of the eggs of Heinerocampa leucosfigma (white- 

 marked tussock moth) pointed to a serious outbreak. 



In New Brunswick the Colorado potato beetle {Leplinotarsa deceni- 

 lineata) and the oyster-shell scale {Lepidosaphes ulmi) were abundant ; 

 the Amatid moth, Ctenucha virginica, though present, was uncommon. 



In Quebec the injurious insects of 1915 were Cacoecia (Archips) 

 argyrospila, Vanessa antiopa (spring elm-tree caterpillar), Eucosnm 

 ocellana, Lepidosaphes ulmi, Eriosoma {Schizoneura) lanigermn (woolly 

 aphis), and especially Rliagoletis fonioneUa (apple maggot or railroad 

 worm). 



The Ontario investigations on apple Aphids were carried out and 

 the following list of natural enemies was drawn up : — Cocctnellidae — 

 Adalia bipunctata, CoccineUa novemnotaki, C. (rifasciata, C. transverso- 

 guttata ; Syrphidae — Syrphus torvns, S. americanus, S. ribesii, 

 Alhgrapta obliqua, Sphaerophoria cylindriai ; Ochthtphilidae - 

 Leiicopis simplex ; Pemphredonidae — Pemphredon inornatus ; 

 Chrysopidae — Chrysopa plorabunda. Control experiments were 

 carried out against the pear psylla, Psylln pyricola. Damage was 

 reported by Aegeria (Sesia) pictipes (lesser peach borer), Monophad- 

 noides rubi (raspberry sa\\'fly), Neocerata {Dasyneura) rhodophaga 

 (rose midge), Rhopalosiphum ligustri, Aphis viburnicola, Chermes 

 pinicorticis on Scotch pines, Coccus hesperidum, Saissetia hemis- 

 phaerica, Aspidiotus hederae, and Hemichionaspis aspidistrae in green- 

 houses. Crioceris asparagi (asparagus beetle) was held in check by 

 the Chalcid, Telrastichus asparagi. Datuna integerrima, the black 

 walnut caterpillar was very abundant. 



In Manitoba the fly, Meromyza americana, was reared from growing 

 wheat, barley and grasses, Agromyza coquilletti from leaves of wheat 

 and barley, Oscinella (Oscinis) frit from wheat, 0. coxendix from wheat 

 and maize, and 0. dorsata from maize. Other pests were the cutworm, 

 Euxoa nialis, Cephus occidentalis (western wheat-stem sawfly), Pieris 

 {Pontia) rapae (cabbage worm), Melasoma (Lina) scripta (cotton-wood 

 leaf-beetle), M. (L.) laqyponica (spotted willow leaf-beetle), Pterorms 

 ventralis, and Lophyrus abietis (spruce sawfly). 



In Alberta the parasites, Meteorus vulgaris, Copidosoma sp., and a 

 species of Ichneumon, were bred from the larvae of the army cutworm, 

 Euxoa (Chorizagrotis) auxiliaris. The predators, Calosoma tepidum 

 and Ammophila sp. were numerous. The cutworm, Porosagrotis 

 orthogonia, was seldom seen. The grasshoppers, Chorthippus curti- 

 pennis and Melanoplus bruneri, were serious pests, and Myzus r ibis wa:>i 

 particularly abundant on currants. 



In British Columbia, the wheat midge, Contarinia (Diplosis) tritici, 

 was investigated. The presence of the cutworm, Peridroma saucia, 

 the cabbage aphis {Aphis brassicae), and the cabbage worm {Pieris rapae) 

 was reported, while pests of increasing importance were the lesser 

 apple worm {Enarmonia prunivora), the currant fruit-fly {Epochra 

 canadensis), and the peach twig-borer {Anarsia linealella). The San 

 Jose scale {Aspidiotus per niciosus), the strawberry root- weevil {Otior- 

 rhynchus ovatus), and the pear thrips {Taeniothrips inconsequens), 

 were recorded from Victoria, and the currant bud-mite {Eriophyes ribis) 

 from Vancouver. The codling moth {Cydia pomonella) was reported to be 

 spreading owing to packing-cases and railroad freight- cars being infected. 



