The Pests of Garden Plants 



makes a capital winter paint for Apple trees. But there is no cheap 

 remedy equal to soft soap for smothering American Blight in the 

 crannies of the bark. The soap may be rubbed into the diseased 

 spots, or as a wash it can be 

 brushed into the boughs. 



Our illustration shows a 

 piece of Apple twig with the 

 aphides and their woolly 

 material natural size. The 

 enlarged figures represent the 

 winged female and the wing- 

 less larva of the Apple Blight 

 Aphis (Schizoneura lanigera). 

 The insect is deep purplish 

 brown in colour, and the 

 well-known bluish white cot- 

 tony material naturally exudes /' J^Km\ Mm$M'-':' : + 

 from it. 



AMERICAN BLIGHT 

 Schizoneura lanigera 



The Carrot Fly (Psila 

 rosa, Fab.), with its larva, 

 pupa, and perfect insect, is 



illustrated natural size and enlarged. The ochreous shining larvae 

 live upon the tap-roots of the Carrot, and by eating into them cause 

 them to rot. The body of the fly is an intensely dark greenish 

 black, with a rusty ochreous 

 head. The presence of the 

 larvae in the tap-root is made 

 known by the change in the 

 colour of the leaves from green 

 to yellow. The plant should 

 be immediately taken up, and 

 the grubs destroyed by dipping 

 the Carrots in hot water. It 

 is well to dig in the autumn, 

 so that the pupae in the earth may be exposed to the frosts of winter 

 and the attacks of birds. When Carrots are thinned in spring, a 

 copious watering will firm the soil round the roots, and prevent the 

 fly from getting down easily to deposit eggs. 



Parsnips are often attacked by the larva of a Carrot Moth named 

 Depressaria cicutella. The larva spins webs for security whilst 



403 D D 2 



X-3 



CARROT FLY 



Psila roste (with maggot and chrysalis) 



