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Apple pests included, PhijUopcrtha horikola, Cantharis ohscnra 

 injurino: the flowers, Plujllohius jjijri and Luperus flavipes. Xijlehorus 

 dispar killed yoims; trees in many localities, especially when previously 

 damaged by frost. There seem to be two generations a year, eggs 

 being laid in May and June and in August and September. The 

 foliage was damaged by Ajjoria crataegi, Episema (Diloba) coeruleo- 

 cephala, Calocampa ,vet'usta, and Cheimatohia hrumata. Cossiis cossus, 

 Cydia porno nella, and Argyroploce {Olethreutes) variegana were also 

 recorded from various localities. Hyponomeuta variabilis, which has 

 been very abundant during several years, was reported from the 

 greater part of the southern and eastern part of the country. Argyres- 

 thia conjugella is doubtless the pest which has caused the greatest 

 loss to the fruit-grower in Norway. Blastodacna afra {putripenella) 

 occurred in two localities and Parornix {Ornix) guitea and Lyonelia 

 clerl-ella mined the leaves. 



The Aphids and Coccids observed on apples included : — Aphis 

 pomi, A. crataegi, A. sorbi and Lepidosaphes idmi. Psylla mali, as 

 in the previous years, caused much damage, and spra}dng against 

 this pest is being carried out more extensively every year. It was 

 observed in three infested orchards that the hawthorn-hedges surround- 

 ing them were heavily infested by this insect. Thrips flavus occurred 

 in great numbers on apple buds, and Tetranychiis telarius and Para- 

 tetranychus pilosus were also recorded. 



Pests of pears included Byturus tomentosus, Phyllobius pyri, Xyle- 

 borus dispar, Erioca)npoides limacina {Eriocampa adumbrata), which 

 defoliated the trees in two localities, and the larvae of an unidentified 

 species of Nematus. The Cecidom}'ids, Contarinia {Diplosis) pyrivora 

 and Perrisia {Diplosis) pyri, were also recorded. The young fruits 

 were injured by the nymphs of Acanthosoma haemorrhoidale, and this 

 bug was also found on the berries of the mountain ash. Taeniolhrips 

 inconsequens {Euthrips pyri), which was recorded for the first time 

 in Norway in 191J-, appeared in two other localities in 1916, and the 

 author calls attentions to the danger, of neglecting the control of this 

 serious pest and suggests the use of a nicotine spray three times during 

 the growing period. Leaves injured by the mite, Eriophyes pyri, were 

 sent from many locahties. 



Plums were attacked by Luperus flavipes,^ Cydia (Carpocapsa) 

 funebrana, which partly destroyed these trees in some orchards near 

 Christiania, and Hoplocampa fidvicornis, which was recorded from 

 Lier, where the crop was said to have been greatly reduced by this 

 pest during several years. Aphis ])omi was less abundant than during 

 the two previous years. In July and August plum trees were 

 attacked by Hyalopterus arundinis {pruni). 



On cherries, Phyllopertha Jiorticola has been very abundant for some 

 years, and it clefohates the young trees. Byturus tomentosus did great 

 injury to the flowers. Xyleborus dispar attacked young trees pre- 

 viously injured by frost and hastened their death. Other cherry 

 pests were Lyonetia clerkella, Argyresthia ephippiella, Tortrix cerasana, 

 Eriocampoides limacina, Aphis cerasi and Taeniothrips inconsequens. 

 There is reason to believe that the last-named has done considerably 

 damage for several years, although the real cause w^as not discovered 

 until 1914. 



