118 



The latter included the parasites, Apanteles lacteicolor, Compsilura 

 concinnaia and Meteor us versicolor, and the predaceoiis beetle, Calosoma 

 sycophanta. The following parasites of Hijphantria cunea (fall web- 

 worm) were obtained : — Apanteles, Meteorus, Limnerium ralidum, 

 L. pilosuhmi, the Tachinid, Varichoeta aldrichi, Towns., and the 

 Ichneumon, Exochilum mundum. Say. 



Insects attacking cereals and field crops included Porosagrotis 

 orthogonia, Morr., on wheat and oats in Alberta ; Euxoa ochrogaster 

 (red-backed cutworm), on cabbage, etc., in Manitoba, Ontario and 

 Quebec ; Agrotis ypsilon (greasy cutworm), on potatoes in New 

 Brunswick ; Cirphis {Leucania) unipuncta (army worm) on oats and 

 Setaria viridis (greeji foxtail grass) in Manitoba ; Melanoplus allantis 

 and Camnula pelhicida in Ontario, Quebec and southern Manitoba ; 

 Lachnosterna spp. (white grubs) ; Cryptohypnus abhreviatus, Say, on 

 maize at Ottawa ; Mayetiola destructor, Say (hessian fly) in Manitoba ; 

 Oscinis carbonaria, Lw. (lesser wheat-stem maggot) in Manitoba ; 

 Bruchus pisorum, L. (pea weevil) in Ontario ; Bruchophagus funebris, 

 Howard (clover seed Chalcid) on seeds of Trifolium pratense L. (red 

 clover) ; Psila rosae, F. (carrot rust fly) on carrots and parsnips in 

 New Brunswick and Prince Edward Island ; Anaphothrips obscuriis, 

 Mull {striatm Osb.) on oats in Alberta ; and Contarinia (Diplosis) tritici 

 (wheat midge). 



The most important insects attacking fruit crops were Eucosma 

 (Spilonoia) ocellana and Olelhreutes consanguinana (bud-moths), and 

 fruit-worms of the genera Xylina on apple in Nova Scotia ; Cono- 

 irachelus nenuphar (plum curculio) and Anthonomus quadrigibbus (apple 

 curculio) in Quebec ; Rhagoletis pomonella (apple maggot) and the 

 Aphids, ApJiis pomi, A. sorhi, Myzus persicae and Aphis {Hyadaphis) 

 avenae, on apple in Ontario. 



A preliminary survey was made of the injury caused by bark- 

 beetles in British Columbia. The following species were found to 

 be involved : — Dendroctonus brevicornis (western pine bark-beetle) 

 D. 7nonticolae (western white pine park-beetle), D. pseudotsvgae 

 (Douglas fir bark-beetle) and D. obesus (Sitka spruce bark-beetle). In 

 Quebec, New Brunswick and the Fraser Valley large areas of 

 poplar, birch, maple, etc., were defoliated by Malacosoma disstria 

 (forest tent caterpillar). Lygaeonematus {Nematus) erichsoni (larch 

 sawfly) was injurious in Manitoba and northern Saskatchewan. 

 Cocoons of this insect imported from Great Britain showed about 

 68 per cent of parasitism by the Ichneumons, Mesoleius tenthredinis, 

 Hypamblys albopictus, Microcryptus labralis and certain Tachinids. 

 The following insects injuring forest trees were also recorded :— 

 Tortrix {Harmologa) fumiferana (spruce bud- worm) in Ontario and 

 Quebec ; Ips balsameus (eastern fir bark-beetle) in Ontario, Quebec 

 and New Brunswick ; Gossyparia spuria (elm bark-louse) in Quebec ; 

 Cyllene robiniae (locust borer) in Ontario ; Elaphidion villosum (oak- 

 twig pruner) in southern Quebec ; and Agrilus anxius (bronze 

 birch-borer) in eastern Ontario. 



The following pests occurred on garden and greenhouse plants : — 

 Oniscus asellus, Armadillidum vulgare and A. quadrifrons, on Begonia, 

 Coleus, etc. ; Rhizoglyphus hyadnthi (bulb mite) ; Isosoma orchidearum 

 on orchids ; Napomyza (Phytomyza) chrysanthemi, on chrysanthemums ; 

 Lycophotia ynargarUosa [Peridroma saucia) on carnations ; and Aphis 

 maidi-radicis on asters. 



