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dicated by its name "Dasyneura leguminicola", a cecidomyiid causing havoc of 

 all clover crops. I first saw it in Napierville, in July, and it had invaded the whole 

 area of an orchard of 2 x 4 arpents. Not less than three fourths of the crop was 

 destroyed by these tiny, bright-red insects invisible in the well sheltered depths of 

 their leguminous abode. 



I know of but one means of fighting this minute enemy of our clover crops; 

 it is that of mowing down the first crop of clover as soon as it is in bloom. The 

 first generation of this foe, which would otherwise invade the second crop, will 

 thus be destroyed and will ensure a clean second growth. 



The fourth cecidomyiid is known to me only through engravings, and we 

 consider it is a lucky thing for our Quebec rose growers that we do not know it 

 otherwise yet, for, it is said to be one of the most noxious insects to be met by 

 flower growers. It is called Dasyneura rhodophaga or the rose midge {Le mou- 

 chcron de la rose). The first article that I read concerning this rose midge occurs 

 on page ?)2) of the report of Dr. Hewitt, Dominion Entomologist, for the year 

 1914-15. It reads as follows: 



"Rose Midge {Dasyneura rhodophaga Coq).In July, specimens of rose 

 "shoots (variety Mrs. J. Laing, H. P.) were received from London, Ont., the 

 "tips being "destroyed by a Cecidomyiid larva. About three hundred rose-bushes 

 "had been affected in this manner. Specimens were submitted to Dr. E. P. Felt, 

 "who reported that it was probably the Rose Midge (Dasyneura rhodophaga 

 "Coq), with which suggestion the observations we made agreed. This appears to 

 "be the first record of this pest, which is considered to be the worst pest with 

 "which the rose grower has to deal. An investigation of the insect is being under- 

 "taken". 



The forty-seventh report of the Entomological Society of Ontario for 1916 

 tells of another outbreak of that insect in Canada in the green house of Messrs 

 Miller & Sons, of Toronto. It gives also the life-history of that insect. 



It has been observed for the first time in America in the green house roses of 

 the State of New-Jersey. 



"The perfect insect, or midge, is two-winged and is closely related to the 

 "Chrysanthemum Midge. The female deposits its yellowish eggs, which are so 

 "small as to be hardly visible to the naked eye, beneath the sepals of the flower 

 "buds or between the folded leaves of the leaves buds. The egg period is recorded 

 "as being only two days. When the young, whitish maggots hatch they at once 

 "begin to destroy the terminal leaves and the blossom buds, and in from about 

 "five to seven days they become mature and then leave the plant, dropping to the 

 "soil where they change to the pupal state. Webster has observed as many as 

 "twenty five larvae in a single blossom bud. David states that in summer the fly 

 "emerges about six days after pupation occurs. In green houses in Chicago, the 

 "insect has been present from June until October or November in such numbers 

 "as to make is impossible to secure a single crop of flowers. During the colder 

 "winter months, it is assumed that the insect is present in the i)upal state in the- 

 "green house soil." 



