Manual of Vegetable-Garden Insects

Cover Manual of Vegetable-Garden Insects
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— Two celery plants injured by the carrot rust-fly and an unin- jured plant of the same age.
attempts to pull them the lower part will break off and remain in the ground (Fig. 103). The outer leaves of infested plants soon turn yellowish and the whole top may wilt down and die.
The injury to celery is of a somewhat different nature.
Here the fibrous roots are eaten ofl' and destroyed. Infested plants take on a sickly whitish color and remain stunted. The plants are often able to throw out a new
... set of fibrous roots near the surface of the ground and can thus outgrow the injury 184 MANUAL OF VEGETABLE-GARDEN INSECTS Fig. 105.
in a measure, but the size and quality of the Larva of the carrot rust-fly (X7D. ^rop are seriousl.v im- Fig. 106. — Puparium of the carrot rust-fly (X 91).
paired. In Fig. 104 are shown two injured plants in comparison with a healthy one.
The maggots become mature in about a month. When full- grown the larva is about y^ inch in length, pale straw- colored, pointed in front with the posterior end of the body obliquely truncate.


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