30 THE KEPORT OF THE ^o. 36 



My attention was directed to this insect because the farmers mistook it for 

 the notorious clover-seed midge. 



The Clover Seed Midge {Dasyneura leguminicola). In August, I was 

 asked by a Vineland farmer to look at a field of red clover which was blooming 

 very irregularly. On examining some of the clover heads numerous pinkish 

 larvffi of the clover seed midge were found within the flower tubes. According 

 to an estimate I made, at least 44 per cent, of the florets were infested or in 

 other words 44 per cent, of the seed crop was destroyed. 



The Clover Seed Caterpillar (Laspeyresia interstinctana) . This species 

 was common on alsike (Ridge way, July 27th) and on red clover (Vineland, 

 August). 



The Seed-corn Maggot {Pegomyia fusciceps). This species was verj- des- 

 tructive to beans in Welland County. 



Fruit Pests. 



As Prof. Caesar in his report on '^ Insects of the Year in Ontario "' will deal 

 fully with the fruit insects of the Niagara Peninsula, I shall confine my attention 

 to three species. 



The White-marked Tussock Moth (Hemerocampa leucostigma) was un- 

 usually abundant on orchard trees, and a considerable amount of injury was done 

 to apples by the larvae gnawing into the fruit. 



N.B. — The calloused blemishes on apples to which I referred in my report for 191€, 

 are undoubtedly the work of this insect. 



The Pear Psylla {Psylla pyricola) was very abundant and injurious in 

 certain parts of the district. 



The Apple Maggot {Ehagoletis potnonella) : As the apple maggot is rarely 

 destructive in the Niagara district, it is worth while mentioning that this insect 

 was decidedly injurious in a small apple orchard near Vineland. 



Miscellaneous Insects. 



Chermes. The Spruce Gall-louse C. ahietis, which in the last few years has 

 been comparatively scarce, was abundant this past season on Norway Spruce. 



Chermes pinicorticis was very conspicuous on young white pines near Stoney 

 Creek. 



Woolly-bear caterpillars were remarkably common this fall. Complaints 

 were received about them attacking raspberry bushes. 



In a Hamilton greenhouse, the Yellow Woolly-bear (Diarrimi rirginka) 

 attacked and skeletonized the foliage of Chrysanthemums. 



FURTHER NOTES ON THE IMPORTED ONION MAGGOT (TIYLEMYIA 

 ANTIQUA Mg.) AND ITS CONTROL. 



Arthur Gibson, Chief Assistant Entomologist, Entomological Branch, 

 Department of Agriculture, Ottawa. 



In Entomological Bulletin No. 12 of the Dominion Department of Agri- 

 culture, the imported onion maggot is discussed on pages 29 to 32 and its 

 control under field conditions on pp. 47 to 49. Since the publication of this 

 bulletin in May, 191fi, further observations on the overwintering habits of the 



